|Affiliation:|| Romulan Star Empire|
|Location:|| Unroth system,|
Sometime prior to the planet's colonization, the Romulan Star Empire set up a cloaked minefield very close to the planet. In 2152, the Earth Starfleet vessel Enterprise (NX-01) unknowingly entered the field, suffering heavy damage before being warned to leave. (ENT episode: "Minefield")
- The planet being in vicinity of the minefield was not mentioned in the episode, but was stated in the reference work "Federation: The First 150 Years."