Along the Mirror Lake Scenic Byway.

Slate Gorge Overlook
Immediately, upon looking out over the canyon at the Slate Gorge Overlook, you will see the colorful Precambrian strata, namely the Uinta Mountain group. Its reddish, gray, and black shale and sandstone stands out. Notice that there is no slate in sight. Misnamed, probably for the dark gray slate appearance of the rock, the shale actually breaks differently than slate would. Shale breaks along bedding planes whereas slate breaks parallel to them. White Tintic quartzite glacial boulders are also present in the landscape (Chronic, 1990).