The Bat Steep is a cliff full of caves inhabited by bats on Dread Isle.
El Toro hid clues to his buried treasure in one of the bat caves, as well as on top of the cliff.
Nancy climbs the cliff and discovers the clues El Toro left behind in the cave and the top of the cliff. She gets trapped in the bat cave, and George has to come and solve a puzzle to unblock the cave's entrance. While climbing, the monkeys at the top of the cliff throw rocks at Nancy and she has to avoid them. If she gets hit too many times, she will fall off of the cliff.