30 unaccompanied children were among 376 migrants who tunneled under border wall into Arizona

[rangerrebew]

30 unaccompanied children were among 376 migrants who tunneled under border wall into Arizona

By Lukas Mikelionis

Published January 19, 2019
Fox News

Around 30 unaccompanied minors were smuggled into the U.S. after tunneling beneath the border wall near San Luis, Arizona on Monday together with a group of over 300 Central American migrants who then surrendered themselves to the Border Patrol.

The tunnels – a few feet long – were reportedly dug by smugglers under the steel border fence, letting hundreds of supposed asylum seekers enter the U.S, according to the Customs and Border Protection.


https://www.foxnews.com/us/30-unaccompanied-children-were-among-376-migrants-who-tunneled-under-border-wall-into-arizona

[Fishrrman]

There's probably little-to-no "underground protection" under the existing wall infrastructure.

These should be a part of the construction, as well:
Steel plate coffer dams:

About 10 feet down ought to do ok.