Tahquitz Canyon was once an important resource for the Cahuilla Indians. During the 1960s it was invaded by hippies and the result was far from idylic. It took the Cahuillas a number of years to clean up the mess and currently the once again pristene canyon can be visited again with or without a guide. For more information or to reserve a ranger-led interpretive hike, call the Visitors' Center at: (760) 416-7044.