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Hundreds of petroglyphs can be seen on the basalt outcrops overlooking the Gila River; many can be spotted from the parking lot. The site is managed by the Bureau of Land Management. Keep your car on the road, and stay on the footpaths (not maintained).
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A former station on the Southern Pacific Railroad line between Phoenix and Yuma. Remains include two standing buildings and foundations, visible right off the interstate.
This archeological site contains hundreds of pre-Columbian petroglyphs and is managed by the Bureau of Land Management. Picnic tables and vaulted toilets available, primitive camping possible (no water). Most heavily visited from October to April; watch out for rattlesnakes.