It was like being in a cavern or a cave.

Given the sophistication of this tunnel, it's clear that the people responsible have significant resources at their disposal.

This one is just absolutely amazing. It's just huge. It really looks like a professionally done mine shaft.

Whether they are designed to smuggle drugs, people, weapons or other contraband, these tunnels pose a threat to our nation's security.

We have the warmest cave in the Ozarks.

GET BACK IN YOUR CAVE.