First, and this is important, I need to make it clear that this is not the 11,107’ Pyramid Peak marked on maps of the range. Instead, it is a local name, seemingly well known to the owners, managers, and staff of the Red Rock Ranch, which has some of the best views of the peak and most definitely offers the easiest access.
From either the ranch or the nearby Crystal Creek trailhead, Pyramid Peak makes a nice destination for a day climb; from its summit are excellent views of the massive complex of Sheep Mountain, aka Sleeping Indian (in fact, this Pyramid Peak is really probably a subpeak of the Sheep massif, and it does not have the prominence to stand as a ranked peak), and, on a clear day, the Tetons, the Absarokas from the Togwotee Pass area all the way to super-remote Younts Peak, and the Wind River Range, including Gannett Peak, Wyoming’s highest. This is a view that takes in Wyoming’s two highest peaks and its most remote.
As is the case on most of Wyoming’s alpine summits, there is neither a cairn nor a register up top. Enjoy the frontier feel and don’t ruin it.
If you have even a park map, and you should, you will see the different options, so I’m not going to go into detail for people too unwise to have a decent map.
Depending on your approach drive, the intersection with the Gros Ventre Road will be either a couple miles north or south of Kelly. Turn onto that road and head east into some really pretty country.
Around 10 miles along the road, and after it has turned from a narrow paved road to a narrow dirt one, you pass the Red Hills, the currently closed Red Hills Campground, and then the currently open Crystal Creek Campground. Shortly past the second campground is a bridged crossing of Crystal Creek, and not far past that is a right turn onto the road that accesses the Red Rock Ranch and the Crystal Creek TH.
I have been a guest at the ranch, and the owners, managers, and staff are great people, but I will tell you that there are signs placed in a way that might make you think the whole road is off-limits. It isn’t. If you are a ranch guest, head in and enjoy the hospitality and utilize the easiest approach to this peak. For those who are not ranch guests, just bear left at the major fork and drive 2 easy miles to the trailhead. High clearance is not necessary for most cars, but people with high clearance and 4wd can shave a little more distance if they want; as the road continues a little bit beyond the official trailhead.