Elkhorns.
This arch is constructed of Elkhorns! Bob and Marcia are beneath the arch. By the way, this is Jackson, Wyoming, not Jackson Hole, Wyoming. There really isn't anyplace, city, town, etc. called Jackson Hole. It is an area in that part of Wyoming. Speaking of elk, we did sea numerous elk, bison, one or two moose, eagles and assorted other animals along our way.