The outpost, along with the Cestus III Colony, were situated on the class M planet Cestus III, located in a region bordering the territory of the United Federation of Planets and the Gorn Hegemony, in the Beta Quadrant. In 2267, Gorn Captain S'slee led his starship, the GCS Gress'sril, and a number of ground troops in what the Gorn considered at the time to be a counter-invasion strike, destroying the colony along with the outpost and slaughtering most of the colonists in what his known has the Cestus III Massacre. (TOS episode & Star Trek 2 novelization: Arena)