Breezometer Sonde  
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Revealing through blowing
"Subterranean Blow and Side-Scan-View" a gentle method of “subterranean reefology” (attachment module)   Vertical navigation through the soil horizon and localisation of water caverns (lowering and raising of the probe in the bore hole)
Horizontal entry into the various layers and caverns, side-scan-view
(through finger tip sensation, dependent upon motion in time)
ffUR || "Forschungsfloss für Unterirdische Riffologie info@ffur.de