Mine detector - geological tool - surface/underground

neophase

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Hard to describe what exactly I am looking for....
Satellite imagery can show what's on the surface of most the entire world, but I want to go as far underground as possible, through different forms of soil such as rock, sand, earth, gravel, snow, ice, etc.

Getting the Geological disposition of a certain land, say Canada and US, the surface, wouldn't be too hard, it's underground that'd be a problem....
 
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