The Hidden Temple was an ancient outpost built on the planet of Arkinnea by the Jedi Order around the middle of the Old Republic. Over centuries of disuse, it fell into disrepair and was abandoned. After the Great Jedi Purge began, the temple was reconstructed by Jedi Master K'Kruhk and a group of younglings. It was used for years as a shelter for Jedi who sought refuge during the Great Jedi Purge and became a subject of rumors among the Jedi survivors scattered around the galaxy.