Another surprise from Mount Diablo:

Minidomes in Mount Diablo hills come with volcanic past

Volcanoes near Clayton?
Members of a conservation group scouting land to buy were surprised to learn this year that dome-shaped hills on Mount Diablo’s eastern flanks are volcanic — the result of magma rushing through cracks and veins in the Earth’s crust.

The public is invited to take part in two hikes to visit a volcanic dome in Perkins Canyon on the east side of Mt. Diablo State Park. The hikes are from 9:30 a.m. to 1 p.m. Saturday and Oct. 8. There is no fee, but Save Mount Diablo requests that participants RSVP in advance by calling 925-947-3535. Hikers will meet at the park-and-ride lot at Peacock Creek Drive and Clayton Road in Clayton.

Volcanoes in Clayton?!? to Volcanic Domes and Beautiful Perkins Canyon

Trailhead: Room for 2-3 cars, west side Morgan Territory Rd, a half mile south of Marsh Creek Rd, just past the mercury mine tailing pond (across from 2727 MTR) Trails: Ray Morgan Road, Perkins Creek Trail Distance: 2 miles R/T plus side trips Elevation Gain/Loss: 305’ minimum
Time: 1-3 hours Notes: Great evening hike, no facilities, sun sets early below North Peak, creeks flow later, mosquitoes and ticks during the wet season and avoidable poison oak.


One thought on “MOUNT DIABLO: Minidomes

  1. Pingback: Geological Outings Around the Bay | Bay Area Itineraries

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