My brother and I took this 4-hour tour. Because we went during the "off season," we were the only two on the tour with our rock star guide, BEN. He was very knowledgeable about the landscape, plants and birds. Ben taught us about the tectonic boundary between the Pacific Plate and the North American Plate and how the plates move. He also has a great sense of humor and kept us entertained. The 4 hours went by quick which meant that Ben kept us interested. You need to do this tour...it's worth your time and $$$. Be sure to request BEN as your guide. NOTE: Not everyone appreciates the desert the same. We voluntarily picked up a good amount of trash throughout the tour (cans, plastic and glass bottles, cigarette butts, etc.). Pack a small trash bag to help in the clean-up effort, if that's your jam.