NB: This is from Volume 6 of the manga

Pg 120
Goro: No good ... can't hear a thing. It's a vacuum.
Goro: It's deep, this ravine ...

pg 121
Chris: Osoraku inseki no shoutotsu de chihyou ni kiretsuga deki, tsuki tanjou no koro kara tomatteita chika no kasu/gasu ga hikedashite shuttai ni tani darou ...
Chris: Probably a meteorite cracked the surface, when the moon was forming to stop gas from coming out of the valley ....

Chris: Dore hodo no fukasa kentoumotsukan...
Chris: I wonder how deep it goes

Astronaut: Honno kazu me-toru yoko ni zuretetara tanisoko ni masakasamayo
Astronaut: How many metres do you think you'd fall if you fell in?

Astronaut 2: yoku asokode tomattekureta wa ne ...
Astronaut 2: It's a... Read More " "