A 4-meter-long UFO landed near a place called Zwickau yesterday and nobody there seemed to notice and/or much care.
I guess this kind of thing happens down here all the time (what else are you going to do in Zwickau?). Unfortunately for the rest of humanity, the object in question turned out to be a remote-controlled mini-me-Zeppelin and no trace of the alien intelligence responsible for its construction has yet been found.
Später stellte sich heraus: Bei dem Ufo handelt es sich um einen ferngesteuerten Zeppelin, der „Ufo-Konstrukteur“ ist ein Hobby-Modellflieger aus dem Ort.

That photo is taken from the cover of Adamski’s book, surely?