"Just after dinner we pass a stream on the right, which leaps into the Colorado by a direct fall of more than 100 feet, forming a beautiful cascade. On the rocks in the cave-like chamber are ferns, with delicate fronds and enameled stalks." - John Wesley Powell, August 23, 1869.Like a gift, booming streams of crystalline water emerge from mysterious caves to transform the harsh desert of the inner canyon into an absurdly beautiful green oasis replete with the music of water falling into cool pools. River trips often stop at Deer Creek especially May through September.Hikers: download the Thunder River and Deer Creek Trail description:http://www.nps.gov/grca/planyourvisit/upload/Thunder_River_Trail.pdfFor Information about Colorado River Trip Opportunities in Grand Canyon National Park:http://www.nps.gov/grca/planyourvisit/whitewater-rafting.htm