From Destinypedia, the Destiny wiki
Location:
Arcadian Valley, Nessus
Enemy Factions:
Vex
Connecting Areas:
Sunken Cavern
Area Type:
Private
Public Events:
N/A
Patrol Beacons:
The Well of Giants is a location in the Arcadian Valley on Nessus, only accessible during the Looped story mission.[1]