Mount Diablo

Mount Diablo is a mountain in Contra Costa County in the San Francisco Bay Area (3,849 feet). It is where the goddess Athena trapped Enceladus a millennia ago after the first Gigantomachy.

Gaea freed Enceladus from Mount Diablo, and Enceladus uses the mountain to imprison his enemies like Tristan McLean. Jason Grace, Leo Valdez, Piper McLean, and Coach Hedge went to Mount Diablo to free Piper's dad. Jason killed Enceladus with the help of his father Zeus and re-trapped him in the mountain.

Trivia

The Native Americans of the area, Chumash, lost a battle against the Spaniards there earning the mountain its name, the Devil Mountain (in Spanish). It is considered a cursed yet holy place for them.

Locations (CHB)
Magical Locations:	Aeolia \| Athena Parthenos Shrine \| Antaeus' Arena \| Camp Fish-Blood \| Camp Half-Blood \| Camp Jupiter \| Cave of Trophonius \| C.C.'s Spa and Resort \| Daedalus' Workshop \| Labyrinth \| Lotus Hotel and Casino \| Mount Othrys \| Ogygia \| Olympus \| Pan's Cave \| Tarquin's Tomb \| Sea of Monsters \| Tartarus \| Underworld \| Waystation \| Zeus' Palace
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Mount Diablo

The Heroes of Olympus

The Lost Hero

Trivia

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