Even this view will be lost as the steel structure begins to rise for about 500,000 square feet of underground space.

With the Taisei plan, underground space can be effectively used for many purposes.

They lead to a 45,000-square-foot underground space that has never been leased.

On the other side of the door was a sprawling underground space packed with troops and weapons.

At the end of the long descent will be an underground space some 30 feet high.

"No matter if the vein led into the underground space of a dozen other surface claims?"

That underground space will also house the health club and laundry room.

They made the opening bigger, and in January 1913, climbed down a rope 42m into the dark underground space.

A cave or cavern is a natural underground space large enough for a human to enter.

I can lead you to the underground space where they converge.