Despite rumors, no traces of secret underground facilities have been found.

It was a vast underground facility that appeared to go on forever.

Those bombs could be used to destroy Iran's underground nuclear facilities.

She could tell neither of the humans was within the underground facility.

Indeed, it was hard to keep from staring at the detail of the huge underground facility.

The project had been kept secret by building the underground facility at the same time the processing complex behind the warehouse was built.

At least the underground facility was still safe, according to the young captain.

Today I wanted to show you these underground facilities.

Finally, there will be parking for around 5,000 vehicleslocated in underground facilities.

But as soon as an area reached a certain level of production, underground facilities started being built.