I'll keep this short since it includes some heavy duty images. I took a couple pictures and a video inside the icicle cave that I mentioned in the previous post.

This is me inside the opening (for contrast and sizing perspective). The temperature really did seem a little warmer inside. Probably because wind could not penetrate, and our breath started warming it up.

This is a view of the world from underneath the bottom toward the lake. The ice (top blue line above the white) hung about 6 inches from the water at its base, so it wasn't attached to anything except the top of the rocks! I bet at least a ton of ice was hanging!
Here is the video tour narrated by yours truly. I hope it works, and I hope you enjoy!