Go early and bring a lot of water. Stop at the first waterfall. It gets hotter, faster and more challenging than you think. By late morning people are turning back and passing out from heat.
Fun hike, man made steps and paths if that turns you off. Waterfall fluctuates by the seasons. Take a stick from the lobby. Go climb the big rocks and take sweet pics.
It is not a 2 mile walk. It is 18 inch steps on most of the way. You walk up to 30 stories and back. I didn't find the "walk" interesting as far as fauna and animals. Maybe Hummingbirds and coyotes.