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residents of and visitors to the lands in and around the park before its creation included. Subsequent indigenous cultures, the Sobaipuri of the Tucson Basin and the Tohono O'odham to the west, may be descendants of the Hohokam. Petroglyphs and bits of broken pottery are among Hohokam artifacts found in the park. The earliest known residents of the land in and around what later became Saguaro National Park were the Hohokam, who lived there in villages between 2 A.D. , the Pinal Schist, pre-dates the formation of the. are part of the Basin and Range Province extending from northern Mexico to southern Oregon in the United States. The volcanic rocks on the surface of the Tucson Mountain District differ greatly from the surface rocks of the Rincon Mountain District over the past 30 million years, crustal stretching displaced rocks from beneath the Tucson Mountains of the Tucson Mountain District to form the Rincon Mountains of the Rincon Mountain District. The 92,000-acre.park consists of two separate areas-the Tucson Mountain District about 10 miles.west of the city of Tucson and the Rincon Mountain District about 10 miles.east of the city-that preserve the Sonoran Desert. Javelina Rocks in the Rincon Mountain District east side of Saguaro National Park, Arizona, Creative Commons Attribution-Share Alike 4.0 International / Finetooth Hohokam petroglyphs in the Tucson Mountain District west side of Saguaro National Park, Arizona, Creative Commons Attribution-Share Alike 4.0 International / Sunshine-AZ

Black Canyon of the Gunnison National Park.