It's not satellite tech. Apparently, it's ground penetrating radar.
The only way to confirm, one way or another, is to drive a shaft. That's expensive, but at least they have an idea of where to dig, now. Another thing is that as the range decreases, detail is enhanced.
48 posted on 03/23/2025 9:05:19 AM PDT by jonascord
(First rule of the Dunning-Kruger Club is that you do not know you are in the Dunning-Kruger club.)