Canyonlands National Park is HUGE! You drive and drive and drive for miles and miles and miles to get to an overlook. There are some trails to hike, but it's just way too hot to hike unless you go first thing in the morning or later in the evening. We enjoyed driving and looking at the various canyon lookouts...especially seeing the Green River. (And it really IS green...even if it doesn't look too green in the pictures!) I'm still not exactly sure how deep the canyon is, though, because there was no way I'd get close enough to the edge to look down. NO WAY!