What's beneath the GROUND in 'The Last of Us' Episode 4?

In one of the scenes, Kathleen and Perry see something moving beneath the ground and trying to come into the real world

Watch The Last of Us Streaming Online

What happened in The Last of Us episode 4? Full recap

The Last of Us' Episode 4 Recap: Danger and Puns in Kansas City - CNET

The Last of Us' Episode 4 Recap: Danger and Puns in Kansas City - CNET

The Last of Us review: True to the game, and just as hard-hitting - The Washington Post

What Was In The Ground In THE LAST OF US Episode 4

WHAT'S UNDER THE GROUND IN EPISODE 4 OF THE LAST OF US #Theory

What Is Kathleen & Perry Hiding in The Last of Us Episode 4?

The Last of Us Part II - PlayStation 4 : Solutions 2 Go Inc, Sony: Video Games