[ Zero, appeased by this and thus returns to focusing intently on the sound. It rumbles ominously again and then slowly but surely starts sounding as if its getting farther away. Zero sits up and springs to her feet. ]

It's moving–

[ She elbows Deku rather roughly, as if to grab his attention and starts off. ]

Come on!

[ Looks like he's legally obligated to follow now!!

Zero moves with an almost animalistic sort of intent, and when the sound stops she too stops, dropping onto the floor again in an attempt to get closer to the ground.

The sound has stopped and she looks unhappy about it. ]

Son of a–

[ She takes her hand (the one made of metal) curls it into a fist and hits the ground. A loud clang following after. She looks up at Deku. ]

You! You know how to get further down? Whatever that thing is it's under us. It has to be!