Underwater photogrammetry

'Added' more details to Kauno VIII fort photogrammetric model. It is possible to walkthrough, like in Quake / Doom games using 'First person' view mode. Model is here:
https://sketchfab.com/models/74e35297bf5143358166143da1f26a27

So, you do not need dive into it from now. Can walk virtually from your sofa 🙂
Photogrammetry/LIDAR is the future of cave surveying, even underwater, as we see here.

Cameras used: 4x SJCAM M20.