To see photos from the 2006 expedition by Dr. Bob Leighty, Natural History Trip geologist, follow this link.
PLEASE NOTE: In an effort to meet the demand for rafting
trips in the Grand Canyon, the National Park Service has imposed a "no repeat" rule. Visitors
may not take more than one Grand Canyon river trip, commercial or private, in the same calendar
year. The rule will be strictly enforced. If you have any questions or concerns regarding this
notice, please contact our office.