Utopia colony

From Memory Alpha, the free Star Trek reference

Utopia colony was a Human settlement established at Utopia Planitia on the planet Mars sometime prior to the 2150s and most likely part of the Martian colonies. In 2155, when a xenophobic faction of Humans known as Terra Prime took over the Verteron Array, Starfleet intended to destroy the array rather than let the terrorist organization carry out their attack on San Francisco. Destroying the array threatened to destroy a portion of Utopia colony, an indication that the two were in close proximity to one another. The colony had at least one hospital as of 2155. (ENT: "Demons", "Terra Prime")