The Earth's Moon Base is an abandoned Era 1 Diamond base on Earth's Moon, built for the use of The Diamond Authority and other elite-class Gems to plan the colonization of Earth.
Description
The Moon Base is an ancient tower which served as the headquarters for Pink Diamond to plan the colonization of Earth. On the first floor, there are murals of Blue Diamond, Yellow Diamond, Pink Diamond and White Diamond. The second floor is empty apart from a warp-like stream containing a blue spherical object in the middle of the room. The top floor is covered by a geodesic dome that allows a scenic view of Earth. In the center of the room, there is a raised platform with a single chair and a dashboard. The chair has a diamond communicator embedded in its left arm while the right arm has some of the controls used to access the computer and adjust the position of the chair. The top floor has a similar appearance to Yellow Diamond's Control Room.
According to Pearl, it's inaccessible by Warp Pad.
History
Season 5
The Crystal Gems traveled to the Moon Base for information on The Cluster's location in Earth. After properly getting the control room operational, Peridot managed to locate it in the Beta Kindergarten.
Season 7
Lapis Lazuli, after learning the truth about Pink Diamond, fled to the moon base for a brief time until she is found by Fluorite many components.
My Little Universe II
The Earth Moon Base was used as a safe refuge from the Plunder Vines invading Earth for the Harmony Gems and many of their friends, being inaccessible for Sumu to reach.