A placid autumn Tuolumne River seen at the upper end of the meadows.
The mountains of the Sierra near the meadows have some permanent snowfields: in the summer they are mostly free of snow. Although brief, the late spring and summer wildflower bloom in Tuolumne Meadows is host to a wide variety of California wildflowers, including the relatively rare Purple Webber, a type of lupine. The roads to the meadows are generally free of snow from June through October. Due to the extreme elevation, road access is closed through winter season in the Meadows.
Many back country hiking and backpacking trail heads start in Tuolumne Meadows including the primary route to summit Mount Lyell (California), the highest peak in Yosemite National Park.
A number of the domes are clustered at the upper end of Tenaya Lake.
In contrast to the big walls of Yosemite Valley, climbing at Tuolumne generally consists of short- to medium-length routes on eleven major domes and a number of minor ones, stretching from the Stately Pleasure Dome above Tenaya Lake to Lembert Dome on the east side of the Meadows. Since the area is all at a high elevation, the climbing season is mainly limited to June through September.
The rock is graniteporphyrite, a very hard form of granite. It has a tendency for exfoliation when exposed to the harsh Sierra winters, thus producing the distinctive dome shapes. The resulting climbing includes both face and crack routes, the former often runout due to limited numbers of bolts, and the latter frequently following very thin cracks. The local ethic is to limit the placement of bolts on new routes and to forbid the addition of bolts to existing routes, resulting in distances of 40 feet (12 m) or more between bolts.[4]
These climbers on Pywiack Dome appear to be on the classic Dike Route.