Soil in the Otay Mesa area in San Diego, next to the border, is perfect for tunneling. It is very hard dirt that does not cave in. The Border Patrol has found several tunnels there in the last few years. The tunnels lead to warehouse buildings with loading docks for 18-wheel trucks. Chapo Guzman visited his daughter in Los Angeles County while he was on the run. He probably went through one of his tunnels. Building more wall down there won’t do much good.
lived on the mesa
Otay Mesa was a great place for dirt biking
A bigger issue is the Tohono O’dham Indian reservation in Az.
It runs from Mexico to Tucson and is a Sovereign Nation in league with the Coyotes and Cartels.
We cannot legally touch them.
Oh we watch and report...