Clarisse was given a secret mission by Chiron to investigate the labyrinth. Kronos had also been sending scouts ahead to find ways into camp with the labyrinth, though with no success. However, all that Percy heard about Clarisse's absence is that she was on a "secret mission." During her time in the labyrinth, Clarisse found Chris Rodriguez near her mother's house and eventually took him to camp after trying to heal him herself.
Nico di Angelo also found an entrance to the labyrinth near Zeus' Fist. After running away from Camp Half-Blood into the woods, Percy and Annabeth followed him, but couldn't find him anywhere. This was because Nico had entered the labyrinth, and had started being trained in using his Underworld abilities by King Minos.
As Olympus moved west, so did the Labyrinth. Percy Jackson, Annabeth Chase, Grover Underwood, Tyson, and Rachel Elizabeth Dare attempted to navigate through the Labyrinth, with varying degrees of success.
Entrances to the Labyrinth could be found all over the USA and were marked with a Delta (Δ), the symbol of Daedalus. In addition, the Labyrinth increased in size constantly. Its life force was connected to Daedalus, so when Daedalus died, the Labyrinth also collapsed.
The Labyrinth gained a mind of its own and eventually grew out of Daedalus' control, since it began to grow and expand on its own. When Percy, Annabeth, Grover, and Tyson tried to get some sleep, they could hear the walls shifting around them. The walls were also constructed of many different materials from stone to concrete. Annabeth incorrectly assumed that Daedalus' Workshop was in the center of the maze, the oldest part of the maze, but was actually surrounded by futuristic walls and doors.
Time in the labyrinth was impossible to tell since time inside the Labyrinth did not correspond with outside time. When Percy and Annabeth fell into the Labyrinth near Zeus' fist, they thought they were down there a few minutes, but they were actually missing for hours after the game ended. Once Percy, Annabeth, Grover, and Tyson found their way out of the maze after what seemed like only a few days, in reality two weeks had gone by, which caused Grover's deadline to find Pan already past. Distance was also distorted, as someone could walk around in the maze and exit almost anywhere. Percy and his group after entering the labyrinth in Texas, were able to exit at Mount Saint Helens in a very short amount of time with some help from Hephaestus' spider.
Two ways of navigating the maze are shown in the series, the first being Ariadne's String (invented by Daedalus and given to Theseus) and the second being with the help of a clear sighted mortal. Rachel Elizabeth Dare demonstrates this in by seeing a slight lighting in the floor guiding them to Daedalus' Workshop.
The Labyrinth was destroyed at Daedalus' death because it was tied to his life force.
In the House of Hades, Pasiphaë remakes the Labyrinth or as she said "breathed life into the labyrinth". Daedalus is credited with the Labyrinth and it was believed that the Labyrinth collapsed during the Battle of the Labyrinth as Daedalus died, but Pasiphaë was alive and she awakened the Labyrinth once more saying that "it will spread under the skin of the earth once more".
The Labyrinth is said to be less sinister now that Daedalus is dead. The campers of Camp Half-Blood use it for the three-legged death race. Nero uses it to travel back and forth between New York and Delphi.
List of Rooms in the Labyrinth
The Roman Room
This room has paintings of the Roman gods at a feast on one wall. There is a fountain that doesn't work in the middle and mosaic tiles all over. This is where Janus tried to make Annabeth choose the left or right door until Hera intervened and sent Janus away.
The Pit Room
This is the classroom like room that the sphinx has her gameshow. There was a grading machine in the corner, but Tyson ripped it off and threw it at the sphinx. There were also skeletons on the walls.
List of Known Entrances
- Zeus' Fist (Camp Half-Blood, Long Island, Farm Rd, 3.141, NYC)
- Alcatraz (Briares' prison on Alcatraz Island in San Francisco Bay, California)
- Tartarus (in the depths of the Underworld)
- Triple G Ranch (somewhere in Texas)
- Mount Saint Helens (an active volcano in Washington State)
- Marriott Basement (a hotel in NYC mainly in Manhattan)
- Mount Tamalpais (the Titan Army base in San Francisco)
- Western Museum of Mining & Industry (somewhere off a highway in Colorado)
- Pan's Cave (Calderon Cavern in New Mexico)
- Antaeus' Arena
- Phoenix, AZ (Near Clarisse La Rue's mother's house)
- The House of Hades
|Magical Locations:||Olympus | Camp Half-Blood | Camp Jupiter | Aeolia | C.C.'s Spa and Resort | Daedalus' Workshop | Lotus Hotel and Casino | Mount Othrys | Ogygia | Pan's Cave | Sea of Monsters | The Labyrinth | Tartarus|
|Cities, States, and Towns:||Alaska | Bar Harbor | Chicago | Detroit | Gila Claw | Jamestown | Long Island | Manhattan | New York City | Quebec | San Francisco | Vancouver | Westport|
|Other Locations:||Aunty Em's Gnome Emporium | Crusty's Water Bed Palace | Empire State Building | Gateway Arch | Grand Canyon | Greece | Hoover Dam | Junkyard of the Gods | Mount Saint Helens | Polyphemus' Island | ROFL | Rome | Triple G Ranch | Waterland | Mount Etna | Mount Diablo | Mount Tamalpais | Pikes Peak | Apennine Mountains|