Grand Canyon

The Grand Canyon is a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona. It is mostly contained within the Grand Canyon National Park, one of the first national parks in the United States. It has a viewing platform shaped as a U. Jason Grace comes up with the idea that some crazy god stuck his knife into the ground and dragged it across to form the canyon. It is very likely that this is how the canyon was formed.

The Lost Hero
The Grand Canyon is visited by Jason Grace, Piper McLean, and Leo Valdez on a Wilderness School field trip. While doing work on the viewing bridge, the three demigods and their protector Gleeson Hedge are attacked by Dylan, a Ventus in disguise on the sorceress Medea's orders. Leo is thrown off the bridge by Dylan and saved by Coach Hedge, who reveals he is a satyr with goat hooves that enable him to climb down the canyon wall easily. Meanwhile, Jason distracts the Venti, who have been summoned by Dylan, using Ivlivs. Piper is also thrown off the bridge and into the Canyon, but Jason saves her by jumping over the skywalk to save Piper, using his power to control the air currents. After Dylan escapes with Hedg Annabeth Chase and Butch arrive and take them to Camp Half-Blood.