Prepare to see something wild and unexpected in this Arizona canyon, where a surprising tree defies the odds in the harsh and ...

Oak, pine, mesquite, and another two dozen cacti species also thrive alongside them in the national park in the heart of the Sonoran Desert about ... of volcanic rock backdropped by the chocolate ...

The land here is mostly made up of sand, salt, and massive rock formations. There are also salt flats and dried-up lakes.