All visitors to Uinta-Wasatch-Cache National Forest must display a valid pass at any standard amenity recreation fee sites. This pass is only valid at American Fork Canyon and Mirror Lake Highway. This pass is NOT valid at Mill Creek Canyon. If you are purchasing on site, follow the instructions in the Additional Pass Details section of the pass. Passes are non-transferable, non-refundable, not replaceable if lost or stolen, and are void if altered or reproduced.