Yanibar

Yanibar was a Wild Space planet with a harsh environment that included seasonal climate extremes. At some point by 3951 BBY, it was settled by a group of families and friends of Jedi. The colony was intended to be a temporary refuge to help those people hide from attacks by the Sith; however, the Jedi who arranged the colonization were all killed in combat and thus, Yanibar became forgotten. The colonists initially nearly succumbed to the planet's environmental challenges, but ultimately they survived due to the development of useful Force abilities among the population, and eventually the formation of the Zeison Sha tradition of Force-users, who acted as the colony's protectors and also developed an anti-Jedi philosophy.

Yanibar was rediscovered by fringe traders after the Battle of Ruusan of 1000 BBY, and the planet became an outpost on the border of the Outer Rim Territories and Wild Space. The Jedi launched an unsuccessful diplomatic mission to reconciliate with the Zeison Sha, but even after some of its members traveled offworld, the latter tradition remained resolutely independent from the Jedi and evaded the Galactic Empire's Jedi-hunting attentions.

Text and facts from the “Yanibar” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.