Triannon from orbit.
The surface of Triannon before the war.
The surface of Triannon after the war.
Triannon is a Class M planet located in the Muratas Cluster in the Delphic Expanse; it is home to the Triannon people. It is located 6.3 light-years from the 12th Sphere.
From the 2050s, Triannon was wracked by a religious war. This war finally ended in March 2153, but at a terrible cost. Both sides were decimated, all the major cities were destroyed. Millions of Triannons were killed. (ENT: "Chosen Realm")