Qu'Vat colony
From Memory Alpha, the free Star Trek reference.
The Qu'Vat colony was a Klingon outpost, active during the mid-22nd century. Qu'Vat consisted of at least two settlements, on the southern and northern hemispheres of the planet on which it was located, with an estimated population of several million Klingons.
In 2154, a group of Human Augments led by Malik attempted to deploy biogenic weapons against the Qu'Vat colony to incite war between the Klingon Empire and Earth. Their attempt was thwarted by Enterprise, resulting in the destruction of the Augments' stolen Bird-of-Prey in orbit of the colony. (ENT: "The Augments")
Unbeknownst the crew of Enterprise, several Augment embryos survived the battle and were retrieved by the Klingon government. Over the next few months, a Klingon scientist named Antaak studied and replicated the altered DNA, creating Klingon Augments and unwittingly unleashing a lethal airborne plague throughout the Empire. To combat the illness, the Klingon government actively sought a cure on Qu'Vat, even kidnapping Denobulan Doctor Phlox and bringing him to the colony.
As a cure was being sought, Klingon Admiral Krell, in league with Earth's Section 31, sent a fleet of warships to destroy the colony and prevent further exposure to the virus. A battle, however, ensued in orbit, between the Klingon vessels and Enterprise and its sister ship, Columbia.
Finally a treatment was discovered and a stalemate drawn between Klingon and Earth forces, saving Qu'Vat colony from destruction. (ENT: "Affliction", "Divergence")
[edit] Background
The Klingon warship, IKS Qu'Vat, may have been named for the colony, or likewise, they both may have been named after the same individual.
The planet's coastline visible from orbit is actually taken from Earth's eastern Aegean Sea, including the islands of Lesbos and Xios.
