This image is made much farther under the ice than Path To The Underworld. It felt, however, much less dangerous and I spent almost half an hour enjoying the space and composing images. A cavern like this this has required months to open and is fairly stable and mature, while the sliver revealed in Path is probably only weeks old and still changing rapidly.
If you have a wide-angle viewer, this would be an excellent time to bring it out. In any case, you will need a bright viewer to reveal the details in the wet floor, but this is my favorite from the set of images I made that day.
This was shot with my TL120-55 on a tripod.