06 FEBRUARY 2011 - PHOENIX, AZ: SKY DUNCAN, an Apache Hidatsa Arikava Indian, from Mesa, AZ, performs at the 21st Annual Heard Museum World Championship Hoop Dance Contest at the Heard Museum in Phoenix, AZ, Sunday, February 6. Hoop dancing has a long tradition among Native American peoples. The hoop or circle is symbolic to most Native people. It represents the Circle of Life and the continuous cycle of summer and winter, day and night, male and female. Some native people use hoop dancing as a part of healing ceremonies designed to restore balance and harmony in the world. Photo by Jack Kurtz