Nothing is known of this location before the outbreak.
At some point, the Whisperers set up this underground hideout.
Maggie, Elijah and Marco make their way to the hideout where Lydia greets them and signals the people inside before opening the hatch. Maggie speaks to Negan and Annie about the upcoming attack by the Commonwealth Army on the Hilltop. Maggie asks the two to keep her son safe while she fights off the attackers, but Negan wants to help her. Maggie convinces Negan to stay at the hideout and protect her son, his pregnant wife and everyone else instead.
Following their failure to defeat Lance and his forces, Lydia and Elijah return to the hideout and collect everyone there.
- The Riverbend survivors presumably found this place due to Lydia and/or Negan's time with the Whisperers.