PRINT: Climb Atomic Nucleus, San Francisco Bay Area

Atomic Nucleus

V5, Boulder, 9 ft (3 m),

Avg: 0.5 from 2 votes
FA: Aaron L. , 4/18/25
California > San Francisco B… > S Bay Area > Castle Rock & S… > Castle & Sanbo… > Atomic Mushroom Boulder

Access Issue: RAIN, WET ROCK CLOSURES; The sandstone around Castle Rock is fragile and is very easily damaged when it is wet. Details

WET ROCK: Holds rip off and climbs have been and will continue to be permanently damaged (like Donkey Dong and countless others) due to climbers not respecting this phenomenon. After a heavy storm the rock will remain wet, sometimes for several days. PLEASE DO NOT CLIMB AT CASTLE ROCK during or after rain.

Access Issue: Trails are closed from sunset to 6:00 am. Details

Trails close at sunset. Give yourself enough time to be back at your vehicle (or campsite if you're staying at one) before dark, or the rangers will fine you.

Always visit the Castle Rock State Park website parks.ca.gov/?page_id=538 for fairly current official information.

Description

Start matched on the slanting shelf as for Atomic Mushroom. Get yourself into the scoop and work your way up with the obvious sloping pockets and underclings. Do not exit right, carefully top out directly straight over the final undercling.

Location

Atomic Mushroom Boulder- roadside

Protection

couple of pads and a spotter

Photos [Hide ALL Photos]

holding tension inside the scoop