The obverse of this medal features a waterfall and a sequoia tree in scene from Yosemite National Park, with the inscription “YOSEMITE” centered along the bottom of the medal.

The reverse of the medal features a view of Yosemite National Park, with the inscription “‘CLIMB THE MOUNTAINS AND GET THEIR GOOD TIDINGS’ JOHN MUIR” under the inscription. The inscriptions “YOSEMITE CENTENNIAL” and “ACT OF CONGRESS 1990” are centered at the bottom of the medal.