Catch my breath

You ready yourself and jump to the first rock, then the next. So far so good. On your third jump, your paw slips and you plunge into the lake where your struggles against the currents are for naught. The last thing you remember is going around and around and around and then... down.

As you fall, you scratch your right shoulder.

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?