The Sixers' Camp is a location in the jungle where the Sixers called home after leaving the Terra Nova colony. Much of the camp was located in trees, to keep the Sixers safe from the wildlife below.
After her father died, Skye took her mother, Deborah Tate, to the Sixers' camp because they had the treatment for Sincyllic Fever. In exchange of her mother's treatment, Skye agreed to be a spy in the colony. Later, Deborah is extracted from the camp and taken to Terra Nova.
Lucas resided in the camp and also had a lab in it, where he completed his calculations to make the portal go both ways.