Oct 25, 2018 — Mt. Ajo, the highest point in Organ Pipe Cactus National Monument, starts at the Bull Pasture Trailhead and follows a trail up to where a sign marks "Bull Pasture". Alternatively, you could take the Estes Canyon Trail, which starts at the same trailhead and connects with the Bull Basture Trail, adding a half mile. Either way, from the end of the official trail, a social trail leads through the beautiful Bull Pasture where you get nice views of the ridgeline leading to Mt. Ajo. The social trail eventually leaves Bull Pasture and heads up a steep gully to the ridgeline, which continues to the summit of Mt. Ajo.
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