The Bassen Rift is an area of space between Romulus and the Romulan Neutral Zone. A dense nebula field, passage through the Rift disrupts subspace communications.
In 2379, the USS Enterprise entered the Bassen Rift en route to a rendezvous with Starfleet Battle Group Omega. However, the vessel was ambushed by Shinzon and his vessel, the Scimitar, leading to the Battle of the Bassen Rift. (Star Trek: Nemesis)
- This area of space had many greenish-hued cloud formations.