The Seikara Caverns cave system was located in the on the planet Dekien in the Outer Rim. Seikara was classified by the Empire as an uncivilized world prior to the Sith rebellion. After the Dark Lord of the Sith who led the rebellion received a vision from the kyber mirror of Shinsui Temple, he shattered the mirror and turned on his fellow Sith. Known afterward as the Ronin, the former dark lord brought a kyber shard from Shinsui Temple to Seikara Caverns.
The tour company Eternity Enterprises began selling luxury visits to the cave system.