Terra Volta Beacon Badge
From City of Heroes: Rebirth - Wiki
Description
You have unlocked the capability of creating a teleport beacon to Terra Volta.
How to Get
One earns the Terra Volta Beacon supergroup badge by visiting each of the following Terra Volta exploration badge locations while in supergroup mode:
Note that visiting these locations while not in supergroup mode will not advance towards earning this beacon badge, even though it will earn the personal exploration badge for that marker.
Location
The Terra Volta Beacon location is (1232, 32, -5644), standing on a wall in the northern section of Gordon Trench.