I'm working on images that were taken in a cave to document fossils. Though I'm not trying to capture the entirety of a passage. There is a paucity of information or publications on doing in-cave photogrammetry for any reason. Pretty much a new frontier as far as I can tell.
I used an array (3) of 1500 lumen LED work lights (rechargable/cordless), with a Nikon D800 and I'm getting pretty good results even with hand-held shots. Using 4 lights would have improved the results I think. Adding a tripod and you likely could do passage-wide modeling. Still, post processing was required - Some photoshop work to even out and increase the exposure on the raw image files. Will be presenting at a conference soon too on this effort.