Narendra III

Klingon outpost site where the ill-fated U.S.S. Enterprise NCC-1701-C was last seen in 2344 after helping fight off three attacking Romulan Warbirds, further cementing the growing United Federation of Planets-Klingon detente.

When the USS Enterprise NCC-1701-C is thrown through a temporal rift due to the battle, the time lines change so that its aid is never recorded and the base destroyed.  The two sides later split and entered a 20-year war the Klingons are winning when the USS Enterprise NCC-1701-C re-emerged in 2366.