Real or Not Real

You ask the guide for help and she nods in direct response to your question, wiping her tears on the back of her paw. She readies herself and in one fluid motion lifts you by your scruff and takes a massive leap into the center of the whirlpool. On your way down, you find 97 gems.

Under the whirlpool, a waterfall floats you into an underground lake. As you pull yourself from the frigid pool, an icy palace opens before your eyes. Thick layers of ice coat the cave's interior and ornate carvings decorate the walls. Your guide stands on the shore, shaking out her fur. She inspects the surroundings, and you do the same. You realize there is no discernible exit, though some of the ice looks thin and even cracked in some spots along the walls.

What do you do?