With this beacon your group can easily fight evil in The Hollows.
How to Get
One obtains the The Hollows Beacon supergroup badge by visiting all The Hollows 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.
The Hollows Beacon Badge location is (1158, 65, -3390), next to the water tower, southeast of the Cherry Hills marker.