Just an observation: Is there a particular reason why the sheep are flocking around the infrasound detector? First picture.
The map here:
(fiddle with the controls on the right to get it to show monitoring stations)
doesn't show an infrasound detector in Schauinsland. Oh, the flickr link says it isn't one:
https://www.flickr.com/photos/ctbto/3817611688/
The photos there show the infrasound detectors as more than a nondescript shed.