Belize ... This is called the ATM Tour or ATM Cave. It's amazing, you swim in with headlamps on and climb rocks and ladders to get to different levels. On each 'platform' you observe different artifacts. It's pitch dark inside with flowing water. Once in a lifetime tour, there are 25 guides that go through special training to be allowed to take tourists in the cave.
An Ice cave in Vatnajökull ice cap, southern Iceland. Vatnajökull is the largest ice cap in Europe, around 3,100 km³ constanly changing it's formation. The texture on the "floor" is snow mixed with volcanic ash from Grímsvötn, the latest erupting volcano in Iceland, erupting in may 2011.
cave..it's just a living paradise, just got to open your eyes mind...