As you enter the canyon, the rocky walls become more and more dramatic. Although not as spectacular, this canyon is purportedly even deeper than the Grand Canyon.

Hint: if you want to take pictures, try to get seated on the right side of the boat; otherwise you'll be shooting into the sun in both directions. And if you can get a seat which is at the beginning of one of the sliding windows rather than in the middle, you'll get a clearer view.