Fear the Walking Dead (2015): Passage: Part 11

Sierra limps around the tunnel, coming across a well lit area full of tools and pipes. She hear Colton talking to Gabi behind her, and she frantically searches for a place to hide, almost tripping over tracks built for mining carts. Colton and Gabi are searching for Sierra and Colton says "They came from down here." Sierra hides in a mining cart, and is attacked by an infected.