"Whoa!" McCree finds his footing and places a hand on his gun holster. It sounds like an earthquake, but also kind of like something's moving and creating that sound.

Whatever it is, he can't imagine something that big stops to have a chat, so he grabs Maya's hand and starts moving.

"C'mon, we gotta get outta here." Where to, he doesn't know, but somewhere they can hide and let it pass, or an exit to the mine itself would be preferable.