He remained with the team until their apparent deaths, where he used his power to destroy an underground alien colony.

The next game level after that also takes place on Mars in an underground colony.

This tube could provide radiation shielding for a future underground lunar colony.

They have even had me using it in the trade between the underground colonies.

It turned out Nemoto had shunned the underground colonies.

Instead of reaching Earth, they are communicated by people living in the Moon's underground colony, and convinced to land there.

The overwintering queen first appears during spring and establishes underground colonies.

An underground colony would escape the extreme of temperature on the Moon's surface.

I mean, like some kind of underground colony or something?

Humans are living in an underground colony which is the only place where they can live now.