The Blocks were a series of massive granite barriers which blocked the path leading up to the Lost Tribe of Sith's mountainside temple on the planet Kesh. Each of these cubes were ten meters tall and gave the impression of a giant staircase for the gods. These barriers had been installed under the orders of the new Grand Lord Nida Korsin in 4975 BBY in order to enforce her edict that no Sith or Keshiri were allowed to visit the temple as long as she lived. She made this edict in order to exile her estranged mother Seelah Korsin, who had attempted to overthrown her father Yaru Korsin during a coup d'état, and to hide her father's last secret: a map which confirmed the existence of a second continent on Kesh known as "Keshtah Major".