LogFAQs > #971874809

I think based off the dungeon's design it's pretty clear that special magic is involved in the ice.

There are 3 ice crystals in the center of the map, which if dropped down the holes each freeze one respective section of the large lava pit in the basement. Magic!

Unfortunately that ice is almost definitely not being used correctly here if it's not completely destroyed by Sahelanthropus.

If Sahelanthropus falls into lava, it's no difference, and if lava spills from the ceiling and does solidify fast, congratulations it's now encased in solid rock that you're definitely not getting out of. It'd be like digging yourself out of a deep avalanche, more snow comes in as you blow out around you.