In the summer of 1991, Terence Meaden and a team of Japanese scientists have had a field (probably somewhere near Silbury Hill) under the supervision of electronic equipment, including radar, magnetometers, video, night vision, motion sensors.
Katika majira ya 1991, Terence Meaden na timu ya wanasayansi Kijapani kuwa na shamba (pengine mahali fulani karibu Silbury Hill) chini ya Usimamizi wa vifaa vya elektroniki, ikiwa ni pamoja na rada, magnetometers, video, maono usiku, mwendo sensorer.