Posted by:
upsidedown
(
)
Date: September 04, 2014 01:35AM
There is a military technology used with either sonar or sound waves or some type of wave that reads the density of soil as it is looked at by drone or airplane flying overhead. It was used in the Iraq wars for locating bunkers underground to target them for the bunker blaster bombing. It is more common now that the technology is becoming more affordable to use in other industry.
The hill could be photographed for underground density that would show any buried metal like plates or concrete reinforced caves or even the more dense limestone or other stable material that would be needed to create a natural cave. It would show up clearly in contrast to the glacial drumlin that is on the hill.
Technology wins again. But the TBM's would claim god was just hiding more of the important stuff from them....even though he helps them find their car keys in a pinch.
Archaeology[edit]
See also: Geophysical survey (archaeology)
Ground penetrating radar can be used to map buried artifacts, such as graves, mortuaries, wreck sites, and other shallowly buried archaeological sites.
Ground magnetometric surveys can be used for detecting buried ferrous metals, useful in surveying shipwrecks, modern battlefields strewn with metal debris, and even subtle disturbances such as large-scale ancient ruins.
Sonar systems can be used to detect shipwrecks.
Forensics[edit]
Ground penetrating radar can be used to detect grave sites.
References:
http://en.wikipedia.org/wiki/Exploration_geophysics