Here are some images illustrating how geologic maps can be shaded and draped over topography. The draped maps were made with KPT Bryce, and the shaded maps with Adobe Photoshop. Click on the thumbnail to see an enlarged version.

Above El Portal: a view looking east up Yosemite Valley

Above Glacier Point: looking west down Yosemite Valley

Shaded relief map of Yosemite Valley