Starbase Eta Serpentis

Starbase Eta Serpentis was a Klingon space station, a Fleet Starbase in Klingon Defense Force service in the early 25th century. It was located in orbit of Eta Serpentis II, in the Eta Serpentis star system of the Eta Serpentis sector in the galaxy's Alpha Quadrant. 

History
In the year 2411, the Alpha Quadrant Alliance constructed the Fleet Starbase-type space station the Eta Serpentis system to protect its planets from Tzenkethi aggression. General Rodek was in command when the Tzenkethi Coalition targeted the planet with a trio of weapon platforms, and a fleet of starships. A five-ship task force of the Allies destroyed the stations and forced the attacking fleet into retreat.