Communication Hub

The Communications Hub was an ancient place that was once used by the Crystal Gems. The place made it's one and probably only appearance in Coach Steven, since Sugilite destroyed its pillars with her flail.

History
Not much is known about this place, considering it's very short existence and history lecture in the episode, "Coach Steven." The communications hub (the exact name is not known) used to be a place where, at one time, Crystal Gems used it to transport messages made of energy over long distances. The place contained many huge pillars adorned with triangular patterns.

Recently, the communications hub started to emit bursts of electromagnetic radiation, which according to Garnet, was hurting television. The Crystal Gems traveled to the hub and destroyed the structure that was causing the waves with Sugilite's flail.

The place was, according to the looks of it, abandoned, similarly to how the Lunar Sea Spire was abandoned before Steven accidentally sank the temple into the ocean.

Trivia

 * A floating chunk of crystals are seen in the center of the first floor of the hub. Their function or relation to the hub is unknown.
 * The hub was shooting beams of energy into space in a similar fashion to how other gem temples shot beams of energy into space while being activated or destroyed.
 * The hub's structure was too strong to be destroyed by the mere physical strength of a single gem as stated by Pearl who said it would take all day.