A Prisoner can leave the Hollow on their turn by doing one of three things:

A. Move up past the top row of the Hollow.

B. Fall into a Pit in the Hollow.

C. Move onto a Watched Key* tile. All other Prisoners in the Hollow are also ejected but remain lit.

*The eyes on the Watched Keys are The Other's. When they're disturbed, The Other empties the Hollow with a screaming quake.

Yellow can climb out of the Hollow by moving one space up (A).

Blue can fall into the adjacent Pit to land on the Main Board (B).

Red can move onto the Key-regardless of whether they can collect the Key or not (C).

However, if Red does this while Blue and Yellow are still in the Hollow, they also be ejected from the Hollow.