Parks & Gardens
Parks & GardensCastle Rock Pool
Brooktree
A 30x70-foot pool tucked in oak woodlands at Mt. Diablo's base, reached by a 10-minute walk that keeps crowds away. Borrow free life vests and lounge under tall trees.
Scenic mountain pool
Family-friendly swimming
Short nature hike in
Uncrowded oasis
Tips
🥾"a bit of a hike to get to it, which keeps it low traffic"
💧"the pool was not heavily chlorinated"
💵bring cash for entry
Castle Rock Pool
BrooktreeOpen
Parks & GardensParks & GardensA 30x70-foot pool tucked in oak woodlands at Mt. Diablo's base, reached by a 10-minute walk that keeps crowds away. Borrow free life vests and lounge under tall trees.
Scenic mountain pool
Family-friendly swimming
Short nature hike in
Uncrowded oasis
Tips
🥾"a bit of a hike to get to it, which keeps it low traffic"
💧"the pool was not heavily chlorinated"
💵bring cash for entry