Fig. 1High Peaks rhyolite over chaparral, Pinnacles National Park
Landform
Rhyolite spires and High Peaks — leftover of an old volcano in the Gabilan Range, not Sierra granite and not Trona’s tufa.
Field note
The High Peaks trail walks the old vents. Soledad and Hollister are the doors. This plate is Pinnacles National Park, not Trona Pinnacles and not Yosemite’s valley granite.
Pinnacles is a national park of rhyolite High Peaks in the Gabilan Range. Soledad and Hollister are the doors. This plate is Pinnacles National Park, not Trona Pinnacles and not Yosemite granite.
