We have tech that can see at least 10 stories down into the ground. I assume, anywhere.
Everyone needs air intakes and air exchange. Hikers stumble over vents all the time.
In my area, we’ve had waves of various dooms-dayers buy land, attempt redoubts and finally leave. Farmers are very savvy & creative. The old knowledge still exists and along with that, knowledge of modern materials and systems. There are more than a few vehicles and farm equipment still running out here that pre-date even oldsters like myself.
Besides GPR, LIDAR and night vision, there are portable EMP devices that will take out isolated bunkers. Only idiots place all their faith in gold and currency. They make fun of us as the people who go into service. What do they think our troops learn there, besides valuable traits like discipline and survival? And what sorts are likeliest to pick up demolition skills?
Out of their element, deprived of their bunkers and power, the globalists will be like a snail without a shell, meaning soft, defensless slugs.
Q:”These people are stupid.”