Poston Butte, Hill summit in Pinal County, Arizona, United States

Poston Butte is a mountain in Pinal County, Arizona, with a summit elevation of 1,749 feet composed of basalt formations overlying altered granite. The terrain features a prominence of 223 feet and is accessible via a marked hiking trail.

Poston Butte was long known as Primrose Hill before it took the name of Charles Debrille Poston, the lobbyist who pressed President Lincoln and Congress to create the Territory of Arizona in 1863. Poston was then appointed Superintendent of Indian Affairs for his familiarity with the region's Native peoples. His pyramidal tomb stands at the summit, reached by a 0.6-mile trail from Hunt Highway.

The hill was long known as Primrose Hill before being renamed for Charles Debrille Poston, whose tomb stands on the summit. Poston was appointed Superintendent of Indian Affairs for the territory because of his familiarity with the Native populations of the area, and the trail to his grave is the hill's main draw for walkers today.

A marked trail extends 0.6 miles from Hunt Highway to the summit and requires sturdy footwear and water supplies. Visitors should allow adequate time for the climb and be aware of local conditions.

The tomb is a pyramid, and the hill itself was once called Primrose Hill. Poston was named Superintendent of Indian Affairs for his familiarity with the Native populations of the area, a post that followed his lobbying of Lincoln and Congress for Arizona's territorial status.