The rocks in that area are made of sandstone. During our winter rains, acidic rain water seeps into and sits in the rocks. The next summer, the dry heat pulls the moisture back out of the rock, leaving behind these holes.

Located in Diablo Foothills Regional Park ebparks.org/parks/diablo_foothills

Check out my Little Yosemite Trail tour for more pictures of the area.
komoot.de/tour/4100005

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Nearby routes

Best routes near Sandstone Formations With Holes, Diablo Foothills Regional Park

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1. Diablo Foothills to Summit Loop

24.7km

07:58

1,030m

This difficult 15.4-mile loop in Mount Diablo State Park offers strenuous climbs, diverse terrain, and expansive views to the summit.

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Hard

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2. Wall Point and Stage Road Loop

26.0km

07:41

730m

770m

Hike the difficult 16.2-mile Wall Point and Stage Road Loop in Mount Diablo State Park, featuring diverse terrain and panoramic views.

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3. Stage Road, Mount Diablo, Wall Point and Borges Trail Loop

12.5km

03:34

290m

280m

Hike the moderate 7.8-mile Stage Road, Mount Diablo, Wall Point and Borges Trail Loop through diverse landscapes and scenic views.

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Moderate

Details

Informations

Elevation 100 m

Weather

Thursday 19 March

31°C

13°C

-- %

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Location: Contra Costa County, California, United States

Other Popular Places to Check Out

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China Wall Sandstone Formation

Sandstone Formations With Holes, Diablo Foothills Regional Park

1. Diablo Foothills to Summit Loop

2. Wall Point and Stage Road Loop

3. Stage Road, Mount Diablo, Wall Point and Borges Trail Loop

Other Popular Places to Check Out

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