The Five Tibetan Rites is a system of exercises reported to be more than 2,500 years old which were first publicized by Peter Kelder in a 1939 publication entitled The Eye of Revelation. Although practically nothing is known about Kelder, one source reports that Kelder was raised as an adopted child in the midwestern United States, and left home while still in his teens in search of adventure. In the 1930s, Kelder claims to have met, in southern California, a retired British army colonel who shared with him stories of travel and the subsequent discovery of the Rites. Originally written as a 32-page booklet, the publication is the result of Kelder's conversations with the colonel. The Rites are said to be a form of Tibetan yoga similar to the yoga series that originated in India. However, the Five Rites and traditional Tibetan yoga both emphasize "a continuous sequence of movement" (Sanskrit: vinyasa), whereas Indian forms focus on "static positions". Although the Rites have circulated amongst yogis for decades, skeptics say that Tibetans have never recognized them as being authentic Tibetan practices.