Need a device to detect cave cavities

Sunwei

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Join Date: Apr 2017

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#1

Need a device to detect cave cavities

02-09-2018, 02:30 PM

It takes a look at the instrument that detects an empty tomb 15 meters underground,
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waltr

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Join Date: Nov 2017

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#2

02-09-2018, 03:15 PM

Ground penetrating Radar.
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Sunwei

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Join Date: Apr 2017

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#3

02-10-2018, 02:26 AM

No other instruments to detect voids
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