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Mount Tamalpais is located on the outskirts of San Francisco, and is the location of the Garden of the Hesperides and Mount Othrys.


It is the site where Mount Othrys was being rebuilt by the newly freed Titans as a war base during the Battle of Manhattan. Kronos, the Titan Lord of Time was assaulting Manhattan at the time so he could get to Mount Olympus which is on top of the Empire State Building. It is named the Mountain of Despair, and happens to also be the sight where Atlas holds up the sky. Both ordinary mist and magical Mist are very thick on the mountain. Many monsters are attracted to it. The mountain is near Camp Jupiter and close to where Annabeth Chase's father and his family live. Annabeth stayed there for the summer, saying she was able to keep watch on the monsters' activity.

Percy Jackson and the Olympians

The Titan's Curse

Percy Jackson, Thalia Grace, and Zoë Nightshade traveled here to save the goddess Artemis and, if need be, Annabeth, from Luke's and the Titan Army's grasps. It is noted that the mountain smelled like eucalyptus, because dragons liked to chew it. Here, they fought Zoë Nightshade's father, the Titan General Atlas until they pinned him under the sky.

The Battle of the Labyrinth

Percy, Annabeth, Nico di Angelo, and Rachel Elizabeth Dare, a mortal, discover a passage in the Labyrinth that leads to Mount Othrys. It is here that Percy witnesses the revival of Kronos after Ethan Nakamura pledges his loyalty to the Titan. Percy is only saved when Rachel Elizabeth Dare hits him in the face with her blue plastic hairbrush and Nico calls up the black rock of the Underworld to prevent Kronos from following.

The Last Olympian

Percy has a dream of the Titan gods Atlas, Hyperion and Krios talking, at Mount Tamalpais, of the explosion of the Princess Andromeda, and of Nico spying on the Titans outside Mount Othrys.

The Heroes of Olympus

The Lost Hero

Jason Grace mentions that during the Second Olympian War, while the Greek demigods were in New York City defending Mount Olympus and Manhattan against Kronos and his Army, the Roman demigods of Camp Jupiter were storming Mount Othrys and fighting the Titan Krios and the monsters there.


See also

Locations (CHB)
Magical Locations: Aeolia | 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
Cities and Towns: Atlanta | Athens | Anchorage | Bar Harbor | Berkeley | Bologna | Buford | Charleston | Chesapeake Beach | Chicago | Colorado Springs | Denver | Detroit | Évora | Gila Claw | Houston | Indianapolis | Jamestown | Keeseville | Los Angeles | Las Vegas | Leeds Point | Malibu | Miami | Montauk | Nashville | New Orleans | Newark | New York City | Oakland | Omaha | Palm Springs | Paris | Pasadena | Philadelphia | Quebec City | Richmond | Rome | San Francisco | San Juan | Santa Barbara | Santa Monica | Seward | Sparta | Split | Seattle | St. Augustine | St. Louis | Tahlequah | Vancouver | Venice | Virginia Beach | Washington, D.C. | Westport
Administrative Divisions: Alaska | Alentejo | Arizona | British Columbia | California | Colorado | Connecticut | Dalmatia | Florida | Georgia | Illinois | Indiana | Kansas | Louisiana | Maine | Maryland | Michigan | Missouri | Nebraska | Nevada | New Jersey | New Mexico | New York | Ohio | Oklahoma | Oregon | Pennsylvania | Puerto Rico | Quebec | South Carolina | Tennessee | Texas | United States Virgin Islands | Utah | Virginia | Washington
Countries: Canada | Croatia | France | Greece | Italy | Portugal | United States of America
Continents: Africa | Europe | North America
Other Locations: Atlantic Ocean | Apennine Mountains | Aunty Em's Gnome Emporium | Brooklyn | Caldecott Tunnel | Calvert Peninsula | Caribbean Sea | Carlsbad Caverns | Central Park | Charleston Harbor | Crusty's Water Bed Palace | Empire State Building | Gateway Arch | Grand Canyon | Hell's Kitchen | Hoover Dam | Junkyard of the Gods | Long Island | Mediterranean Sea | Mississippi River | Mount Diablo | Mount Etna | Mount Saint Helens | Mount Tamalpais | Mount Vesuvius | Nero's Tower | Oakland Airport | Oracle of Delphi | Panama Canal | Pacific Ocean | Pikes Peak | Plaza Hotel | Polyphemus' Island | Queens | Rocky Mountains | Rainbow Organic Foods & Lifestyles | Roman Empire | San Francisco Bay | St. Thomas | Triple G Ranch | Waterland