Tamanawas Falls is a popular waterfall on the east slope of Mount Hood, along Cold Spring Creek. The falls plunge a sheer 109 feet over a columnar basalt in a broad display that can stretch to 45 feet across at times. Tamanawas Falls was originally known as Giffords Falls, after photographer Benjamin A. Gifford, whose photos documented the falls in 1909 - whether he should be properly credited with discovery or first documentation of the falls is not known. The current name, derived from a Chinook (shin-nook) word which means "friendly or guardian spirit" was officially adopted in 1971.