Park you car at Bull Creek Pass, and make the short 2.5 mile trek to the summit of the Henry Mountains. The road from both sides of Bull Creek Pass is accessible for 2WD, but would be impassable in high water years, or in the spring melt. The trailhead is clearly visible with a log fence painted brown, and a log book next to the gate. The trail is very easy to make out until you reach the top of the summit ridge, but as there are no trees to block your view, it is easy to spot the summit and make your way over to it. The tallest stone cairn is actually not the summit, you must continue to a smaller cairn with a mailbox in it. This is where the geocache is. If your feeling energetic, drop down to the saddle between Mt. Ellen Summit and Mt. Ellen Peak, then trek the steep sides of Mt. Ellen Peak. You will complete two mountains higher than 11,500 feet in less than an hour!
The tall cairn is not the summit, you must continue a little bit along the ridge, and reach a smaller cairn with a mailbox. Good, well-fitting shoes as there are areas of loose rock. the summit is completely exposed, so be prepared for high winds, full sun, but also incredible views of Capital Reef, and the Burr Desert.