Contact: Dr. Daniel F. Carlson, daniel.carlson@hzg.de

This dataset includes seven files, in addition to this README file:

ROCK PILE 01
bear_trap_rockpile01.jpg
bear_trap_rockpile01.mtl
bear_trap_rockpile01.obj
bear_trap_rockpile01.pdf

ROCK PILE 02
bear_trap_rockpile02_model.mtl
bear_trap_rockpile02_model.obj
bear_trap_rockpile02_model.pdf


OVERVIEW

The .obj files are high resolution mesh models of rock piles near the Bear Trap, a Norse ruin at the western end of the Nuussuaq Peninsula in NW Greenland. 3D models of the first rock pile (rockpile01) were created from 326 photographs and the second model used 293 images. These images were processed using Structure from Motion Multiview Stereo photogrammetry software (in this case Agisoft PhotoScan Pro v1.4 Linux Ubuntu). Images were collected as part of the Vaigat Iceberg-Microbial Oil Degradation and Archaeological Heritage Investigation (VIMOA) project that was funded by the Danish Centre for Marine Research and supported by the Arctic Research Centre at Aarhus University, the Danish National Museum, the Greenland Institute of Natural Resources, and the Greenland National Museum and Archives in Nuuk. Walsh et al. (2020) provides an overview of the archaeological surveys conducted during the VIMOA project. 

Walsh et al. (2020) The VIMOA project and archaeological heritage in the Nuussuaq Peninsula of north-west Greenland. Antiquity 94:e6 doi:10.15184/aqy.2019.230

HOW TO VIEW THESE MODELS

The .obj 3D model of the grave can be viewed using Meshlab, an open access software http://www.meshlab.net

The following instructions were tested on the Mac version of Meshlab. The process should be similar on Windows and Linux, but has not been tested or verified. 

+ Download and install Meshlab
+ File -> Import Mesh
+ Select the ‘.obj’ file
+ Wait for the mesh to load - this can take 30-60 s depending on your computer
+ If the Info Panel is not open, View -> Show Info Panel
+ To change the appearance of the model, click on the cylinder icon and options for ’Shading’, ‘Color’, and ‘Back-Face’ will appear
+ NOTE: if ‘Color: Face’ is selected the model will appear in all white; to change this select ‘Color: Vert’

For more information about Meshlab- read their documentation. 

The .pdf file is a 3D model that can be viewed in Adobe Acrobat Reader. For instructions on how to view 3D content in Adobe Acrobat Viewer, please visit https://helpx.adobe.com/acrobat/using/enable-3d-content-pdf.html

RELATED DATASETS
Carlson et al. (2020) 3D model of a box-type structure under a small cairn near the Bear Trap in Northwest Greenland. Dataset submitted to Zenodo. doi:10.5281/zenodo.4011977

Carlson et al. (2020) Orthomosaics, digital elevation model, and QGIS project of the 'Bear Trap' - a Norse ruin in Northwest Greenland. Dataset submitted to Zenodo. doi:10.5281/zenodo.4013258

Carlson et al. (2020) 3D model of a cairn grave near the Bear Trap in Northwest Greenland. Dataset submitted to Zenodo. doi:10.5281/zenodo.3984864

Carlson et al. (2020) A 3-D model of The Bear Trap: A unique stone structure on the northwest tip of the Nuussuaq Peninsula, Greenland. Dataset submitted to Zenodo. doi:10.5281/zenodo.3980541