This is the second review of an improved website. I will therefore only address the issues and improvements. I am repeating the positive things of the first review.

The Github-repository under review shows an interesting way of sharing both archaeological information and 3D-models, using existing technologies (3DHop, Java-script, CSS, etc). The approach is clear and straightforward and is a low-cost approach. In addition, it follows the ideals of open science and FAIR-principles. I think that this is all commendable, since it makes archaeological information and archaeological reconstructions available for a wide public. 

The context of the website, a Master-thesis is mentioned, and it would be helpfull to add a link to the document, or the document itself. As stated in the previous review, the intended audience is not made explicit, but it might appeal to a broad audience. I would really suggest that you would add this to the "About" section or the Readme.md.

It is commendable that the website is available in both English and German, since it enables a wider public to access the information. Since the Düwelsteenen are found close to the Dutch border, a Dutch version, might be a future addition to pursue. The English has been improved strongly in the version. Thank you!

The technologies behind the website are all open (except GoogleMaps) and fairly common in the archaeological community. In that sense the website builds further on what other archaeologists have done, and the use of relative standard technologies also improves the long lived availability of the 3D-models, information and website itself. However, I am not a specialist in building websites, so maybe a specialist in that field might think differently.

I really liked reading the Readme.md, since it explained several of the technological choices made to solve certain issues. I am looking forward to read a scientific paper that would explain various things on the website/Github-repository, and including the  (scientific) backgrounds. In addition, to adhere better to the FAIR-principles a more complete metadata document would also improve the data set itself.

I have really enjoyed going through the website both in English and German. I think that this is a really nice contribution, although the scientific background should really be explained in a paper or with a link to the thesis behind the website. All in all it is a valuable contribution to archaeology and public outreach!

3Düwelsteene: The 3D Reconstructions of the Megalithic Grave “Devil Stones” near Heiden, Westphalia

Revision Round #2

The primary focus for this website is to share a digital reconstruction, history, location, and legends/tales for the Düwelsteene megalithic tomb. The website offers a user-friendly, open science approach for users to interact with the data and information related to this site. It will appeal to those living in the region, as well as to researchers studying megalithic tombs more broadly. The intended audience appears to be a mix between the public and professionals, but I do not find that this detracts from the overall message. Both user groups can find varying depths of information based on their interest level.

The author’s revisions from round 1 address most of the suggestions provided by the reviewers, but a few issues remain that should be resolved. The overall goal for this website is reflected in the title, but unlike a traditional paper, there is little introduction to the website on the main “index.html” page. The video helps offer some context, and the statement at the bottom of the page provides some additional information, but a brief explanation stating the purpose for the website needs to be right at the top with the title. Perhaps moving the “Reconstructions” section at the bottom of the page to the top will help provide that foundation for the rest of the website. You might also consider adding the “Context” information in the ReadMe file here as well.

This may be personal preference, but a logical path through the website is not clear to me and may cause confusion for other users. I recognize that a website can be a non-linear way of accessing data, but it also leaves me bouncing around from section to section. Perhaps I am too used to reading papers that give a more linear order to the content, and maybe this is one of the challenges with using a website. Is there a better way to organize the information that leads the reader from the beginning of the story to the end? Could the website start the reader with a brief introduction to the project and then lead them through the early history and excavations and end with your reconstructions? The menu button would still allow people to move to other sections if they chose, but there would still be a basic organization to the information. Again, perhaps moving the “About” box at the bottom to the top of the “Index.html” would be a starting point.

On the “about_en.html” page, the first thing I noticed was the amazing sequence of images at the top. I would recommend adding a caption to these images to explain what the user is seeing. I really enjoy the “History of the excavation” and “Tales” sections here. I think both audiences will appreciate them, and I would add more content here in future editions, if it is available. These sections add a rich, human element to your research. I would recommend formatting your image captions in a way that makes them stand out from the main text. You could use a smaller font size or italics to make this differentiation and improve readability. I would recommend doing the same for the sources, or you could add a line between the sources and the main text. I am curious about publishing location and access information for the site. I assume the site is open to visitors and is monitored? Do you need permission to share the location? I am not familiar enough with the local laws and regulations, but it might be something to consider if you have not already.

The ”methods_en.html” page adds essential, valuable information that was missing in the first version. This webpage really strengthens your overall product by explaining how you collected and processed the data. Although SFM is fairly well known now, explaining your methods adds that all-important replicability necessary for any scientific endeavor. I also appreciated the addition of the comparative tombs used to facilitate and justify your reconstruction of Düwelsteene.

On the “3D_Today-en.html” I first noticed that the 3D reconstruction did not work on the version I was using. I can see the grid and controls, but I did not see a model that I could navigate. I would also move the “Reconstructions” section to the top of the webpage so that users can more easily navigate between the different time periods. Alternatively, you could add tabs for each section at the top to make it easier to navigate. I also noticed that some of the images are highly detailed but small and hard to see. Perhaps you could open a full-sized version if clicked on by a user?

Final thoughts: the new additions to this version add important background information and methods that strengthen the website considerably. These additions help justify the interpretations, but especially the 3000 BC version. The 3D models are well made and add valuable visual representations that provide a dimension not possible in paper formats. I would recommend reviewing the overall organization and flow to the website (see notes above), check the functionality of the main 3D model reconstruction, and find a native English speaker to review the grammar and structure, as noted in the previous reviews. The changes are minor but necessary. You should, however, be proud of producing a high-quality English version that only needs a little tweaking. Gut gemacht!

This is the second review of the submission titled “3Duewelsteene - A website for the 3D visualization of the megalithic passage grave Düwelsteene near Heiden in Westphalia, Germany. This review confirms that the suggested revisions were made. This website will be an excellent resource for anyone interested in the Düwelsteene megalithic tomb or in megalithic tombs in general. It is also an excellent example of scientific reconstructions of archaeological structures and their public presentation.

The Github-repository under review shows an interesting way of sharing both archaeological information and 3D-models, using existing technologies (3DHop, Java-script, CSS, etc). The approach is clear and straightforward and is a low-cost approach. In addition, it follows the ideals of open science and FAIR-principles. I think that this is all commendable, since it makes archaeological information and archaeological reconstructions available for a wide public. However, I think that it is not completely clear who the intended audience for the the website itself is. This becomes not evident after reading the website, and the Readme.md does not descripe this either. I feel that this should be made more explicit: why did you build this nice website and for what audience. Some of the information seems to point to a general interested audience, while other information seems more intended for professional archaeologists. The website peaked my interest in the subject, and I really wanted to know more about the megalithic grave, but the information on the website was sometimes to shallow and lacked depth. I think that can easily be solved.
It is commendable that the website is available in both English and German, since it enables a wider public to access the information. Since the Düwelsteenen are found close to the Dutch border, a Dutch version, might be a future addition to pursue. Concering the languaes, it seems that the website was originally built in German and translated into English afterwards, sometimes resulting in Genglish. This is generally the case with the sentence structure, but it does not influence the understandability of the text. Therefore, I would suggest to have a native speaker (English) go over the language to improve this. This is not a must, but it would make it better.
The technologies behind the website are all open (except GoogleMaps) and fairly common in the archaeological community. In that sense the website builds further on what other archaeologists have done, and the use of relative standard technologies also improves the long lived availability of the 3D-models, information and website itself. However, I am not a specialist in building websites, so maybe a specialist in that field might think differently.
I really liked reading the Readme.md, since it explained several of the technological choices made to solve certain issues. However, I feel that a concise paper to supplement the website/Github-repository explaining the (scientific) backgrounds is seriously lacking. It would have been very interesting to read about the backgrounds in a scientific or scholarly paper. I also think that this would increase the value of the website for a archaeological audience. A paper as such would function as the paradata of the website and improve the scientific quality. In addition, to adhere better to the FAIR-principles a more complete metadata document would also improve the data set itself.
I think that you can be proud of what you achieved, but there is room for improvement. I hope that this review will help to improve the website and the accessibility of the information and data.

​​​3Duewelsteene Review

The submission titled “3Duewelsteene - A website for the 3D visualizazaon of the megalithic passage grave Düwelsteene near Heiden in Westphalia, Germany” is a website submited for review. The purpose of the website is to present the 3D reconstruction of the Düwelsteene megalithic tomb. My review found the website to be well organized and informative. The 3D reconstructions were of excellent quality, particularly considering the retrospective nature of the photogrammetry. The 3D tools embedded in the website were quite useful. The procedures and tools were noted in the text. The author is commended for providing a reconstruction that was useful for visualizing how the tomb may have appeared while also clearly differentiating the reconstruction from the original. This website represents a substantial academic contribution, as well as an excellent contribution to public archaeology. The text of the website could use some minor revision for grammar and readability. I have included some specific notes.

Website

Suggest reorder “The Düwelsteene from today to 3000 BC” to be “The Düwelsteene from 3000 BC to today”
Video “Video showing the changes over time and how the megalithic tomb Düwelsteene was built” is excellent

Front page is excellent

Page: 3DTodayen.html
“Since the reconstruction in 1932, the tomb, as it can be found today, has the following dimensions: The entire tomb, which is oriented from the southwest to the northeast, has an outer length of 12 meters. Inside, the length is 10.2 meters. The width of the megalithic tomb is 2.7 meters to 4.3 meters on the outside, while the complex has a width from 1.5 meters to 2.2 meters inside.”
- Grammar needs to be cleaned up
“The positioning of the stones of the grave can be seen as a 3D reconstruction as well, in the state they were presumably in before the restoration in 1932.”
- Awkward comma placement

Page: 3Dbefore1932en.html
“Reconstruction of the tomb before it was restorated in 1932.”
- Change restorated to restored
“There are photographs of the excavation, drawings were also made of the megalithic grave during the excavation.”
- Sentence should be separated with semicolon or split into two sentences.

Page: 3D3000BCen.html
“potential reconstruction of the tomb and how it could have looked like around 3000 BC”
- Capitalize potential and replace how with what
“Nowadays there almost all supporting stones and three capstones can still be seen.”
- Not sure what this means
“In this grave and on the stone pavement the dead were placed, they were given funerary goods, as evidenced by the finds of ceramics, animal bone artifacts and jewelry during the excavation at the Düwelsteenen.”
- There needs to be an “and” separating the two parts of the sentence

TITLE/ABSTRACT/INTRODUCTION
Does the title clearly reflect the content of the article?
Yes, it is appropriate.

Does the abstract present the supported findings of the study concerned and no other?
Yes, it focuses solely on the study in question.

Does the introduction clearly explain the motivation for the study?
Yes, the motivation for the study is clearly stated.

Is the research question/hypothesis/prediction clearly presented?
The research question is stated, but it could use some refinement to reduce repetition. The research statement is somewhat indirectly stated throughout the abstract. Some editing that focuses on a more direct statement would be helpful, in my opinion.

Does the introduction build on relevant recent and past research performed in the field?
The abstract uses some general terms (e.g., 3D model(s), digital methods, three-dimensional models), but it does not mention the more technical methods used to derive these datasets, such as structure-from-motion (SfM) or photogrammetry. I was expecting mention of these terms given their relevance to this subject. I would recommend focusing on these methods and literature that are heavily documented in previous archaeological research. NOTE: The SfM method is briefly mentioned on the website under the “Reconstruction History” section, but it is only briefly mentioned.

MATERIALS AND METHODS
Are the methods and analysis described in sufficient detail to allow replication by other researchers?
I would personally want to know more about the actual SfM methods used to reconstruct the megalithic tomb. I would also like to know more about how the data was captured. What scanners were used? What cameras were used? What software was used “stitch” the point clouds together? The author mentions some basics, but I would prefer more information. This information would help others replicate the methods used.

Is the experimental plan consistent with the questions?
The goal was to attempt to reconstruct this specific megalithic tomb as it was originally built using old photographs and current scans/photographs. I was confused about how this could be achieved and tested without additional information to produce the interpretation of the tomb as it was originally erected in 3000 B.C. Some additional data seems important here. Perhaps it is available in the archaeological datasets and could be shared on the website?

Are the statistical analyses appropriate?
N/A

Have you evaluated the statistical scripts and program codes?
N/A

RESULTS
Have you checked the raw data and their associated description?
N/A

Have you run the data transformations and statistical analyses and checked that you get the same results?
N/A

To the best of your ability, can you detect any obvious manipulation of data (e.g. removal)?
No, the data does not appear to be manipulated.

Do the statistical results strongly support the conclusion (p< 10-3 or BF>20)?
N/A

In the case of negative results, was a statistical power analysis (or an appropriate Bayesian analysis) performed?
N/A

Did the authors conduct many experiments but retain only some of the results?
N/A

DISCUSSION
Do the interpretations of the analysis go too far?
Yes, a little bit. It is unclear to me, at least with the information presented on the website, how the author decided what the tomb looked like in 3000 B.C. in the final rendering. I understand that this is highly interpretive, but I think it important to be explicit about the interpretation.

Are the conclusions adequately supported by the results?
The final interpretation of what the tomb looked like originally does not appear to match the results from the photogrammetry of recent and old photographs. I assume much of the data comes from other sources that are not fully explained. It would be helpful to know how the author decided to arrange the stones noted in the excavations into the position seen in the final models.

Does the discussion take into account relevant recent and past research performed in the field?
Yes, in part. The author discusses the archaeological work specific to the site itself but does not include a discussion of the methods/technology. I was hoping to see some mention of how SfM and photogrammetry have been used in past archaeological research and why these methods were choosing for this project instead of using other methods (artist reconstruction, etc.).

Did the authors test many hypotheses but consider only a few in the discussion?
I was not able to discern any hypothesis testing for this project.

REFERENCES
Are all the references appropriate?
Yes, they seem appropriate. I would suggest more references to support the study. They were also difficult to find on the website.

Are the necessary references present?
No. I would recommend a review of the literature on archaeological digital reconstruction (specifically SfM and photogrammetry) to include in this research. I think this is important given the focus of the research on these methods to derive the results.

Do the references seem accurate?
Yes, they appear to be accurate.

TABLES AND FIGURES
Are the tables and figures clear and comprehensive?
Yes, they are clear.

Are all the tables/figures useful?
Yes

Are there too many/too few tables and figures?
I think the number of figures is appropriate.

Do the tables and figures have suitable captions such that they can be understood without having to read the main text?
The image under the “tales” main section does not have a caption. The source for the image is listed when the user clicks on the section, but it is difficult to find at the bottom of the webpage. I would recommend using the format under the “history of the excavation” section which includes the caption and source under the image.

CONCLUDING COMMENTS
I think this is a very interesting research project that integrates historic photographs with modern datasets from multiple sources. I believe the research has scientific merit and value to the regional archaeology. My concerns are noted above, but in general, I would recommend adding some specific details instead of using generalities. This is especially evident in the methods and results. I would also recommend some editing for clarity, grammar, wording, and general writing structure. I do not see any glaring problems, but some editing would refine the writing. I appreciate the novel approach of using a website to share research. I feel like the website was a little difficult to navigate at times. I had a hard time finding some of the elements (references, sources, captions, etc.). Perhaps the main menu could provide a link to some of the major elements for others to easily access. With a little refining and polishing, I think this study will be a nice addition to the body of work associated with archaeological digital reconstruction.