Underground worlds on The Moon!

People,

An atmosphere there is!

http://www.holloworbs.com/Lunar_Atmosphere.htm

The smoke is being swept aside due to the presence of an atmosphere.

http://www.holloworbs.com/smokestacks%20on%20%20The%20Moon.htm

And the "factory" connected to the smokestacks is underneath the surface. Underground worlds on The Moon!

Cheers!