Cave3D is a 3D viewer that lets you see your cave survey while you are taking it, inside the cave, and analyze it in relation to a digital terrain model and other caves, on the spot.
You can move, zoom, rotate the 3D view of the cave. 3d wall can be reconstructed from the splays. Surface DEM can be loaded from a ascii grid file, and surface textures from a geoTiff or OSM map.
It can display directions rose diagrams, and survey infos, and you can measure the distance between stations, their distance along the cave, and the depth below the surface (if there is DEM).
Model export formats: STL, CGAL, LAS, DXF, and shapefile.
Surveys can be loaded also from Therion (as exported by TopoDroid), Loch (including DEM and texture), Compass, and VisualTopo files.
Translations: M. Guerrero (Spanish), A. Kozhenkov (Russian), R. Severo (Portuguese)