Some media reports have stated that the purpose of Divine Strake was to test the ability of a conventional explosive to penetrate underground military compounds.

The third floor contains the most important areas of the underground compound: storage places, wine or oil presses, and kitchens.

Adam had lived out her worst nightmare - he'd spent almost his entire life locked away in Project Clean Slate's underground compound, never even allowed to see the sun.

That would do nothing but give away the underground compound unless Chloe was will-ing to kill the man and try to run off the rest of them-provided he told the truth about where they were.

We went to an underground compound - some sort of medical research facility-" "Rafael," Samantha said, very patiently, "I'd love to hear about your dreams all day, but this blood on my hand isn't Daniela's.

The surviving Psychons were forced to retreat to underground compounds to survive.

She was on the wrong end of the underground compound to even pray for help.

Unlike her two subordinates', her breathing seemed unaffected by her exertion, even though Xiong knew the trio had to have run the hundred or so meters from the entrance to the underground compound.

As the team leaves the underground compound, Tom Manning reprimands them.

At the underground compound, the confrontation between Jack, Desmond and Locke provides enough of a distraction for Kate to knock Desmond down.