One of the prototypes has a particularly thick concrete base - looks to be about six feet thick where people on the ground might try attacking with a jackhammer, ramming with a truck, or blasting.
i was thinking they would be thicker walls.
what about tunneling? I read some elaborate tunnels many feet down how been found, I’m sure new ones are being made since we will soon have a wall. al it takes is a willing home owner on each side of border to allow tunneling from one to the other.
Maybe the better ones are not completed yet. I thought they would be bigger and more beautiful.
Maybe the prototypes aren’t built to scale.
“what about tunneling?”
The best solution for tunneling is sensors, rather than more concrete.
It is not feasible to put thick concrete down 60 - 100 feet, and even if you did, without sensors to detect tunnels/tunneling activity, they could tunnel through that concrete as well as the soil.
Modern sensors can detect a lot - they can even distinguish a human footfall from a deer, as well as digging activity quite deep down. They are also much less expensive than burying more concrete.
The best solution is a wall and a fence (double barrier), with some exclusion area wired with sensors - at least buried vibration sensors, but they could also have lights and cameras in urban areas or around gates.
Another approach to countering tunnels, is to periodically patrol with ground penetrating radars, which can be towed behind vehicles driving along the length of the wall.
One of the prototypes has a particularly thick concrete base - looks to be about six feet thick where people on the ground might try attacking with a jackhammer, ramming with a truck, or blasting.
Sensors will pick up all activities around, on and under the fence.