Mount Diablo
Rock City
Black Hills from South Gate RoadNative American Grinding Holes at Rock CitySpringWind CavesSteps in the SandstoneRock City and Sentinel RockConcreationSummit and Rhine Canyon Burn Zones from Curry PointPoppies on Long RidgeArroyo Del Cerro from North Gate RoadVasco Caves
East Bay Regional Parks Interpretive Tour
Windmills at Vasco Caves Regional PreserveRed-Legged FrogsSandstone Rock FormationsConcreationWind CavesLichen Covered RocksSticky MonkeyflowerVernal PoolsVernal PoolFairy ShrimpPredaceous Diving Beetle Larva aka Water Tiger (Eats Fairy Shrimp)View towards the Central ValleyOur Tour Group Exploring a Wind CaveSheep SkullCave through the Hill (Left Side)Hannah Nicole Vineyards
Clouds over Mount Diablo
Shell Ridge
Ridge Top Trail to Indian Creek Loop Hike from Marshall Drive
Climbing Shell RidgeMount Diablo from Shell RidgeFence LizardRidge Top TrailCalifornia GiliaChinese Houses and Winter VetchRidge Top TrailIthuriel's SpearCostanoan TrailWild MustardOld Tree along Indian Creek TrailIndian Creek TrailRed-winged Blackbird