Cap au Diable Beacon Badge
From City of Heroes: Rebirth - Wiki
Description
Your teleport system has been upgraded through your explorations of Cap au Diable. You can now add a beacon to take you there.
How to Get
One earns the Cap au Diable Beacon supergroup badge by visiting each of the following Cap au Diable 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 Cap au Diable Beacon location is (-370, 166, -389), near the center square in Aeon City.