The ice cave under the monstrous Vatnajökull Glacier was visited for the last time today (when I took the image) for this winter. They named the cave "The Crystal Cave". Next winter it might have collapsed.
It's such an incredible feeling to be there inside. I thought I knew how it'd be, but still, when I saw it for the first time, and genuine Wow came out.
Exif: ISO 100 ; f/5.6 ; 1.3 sec ; @14mm