 On the night of 11–12 July 1992, a crop-circle making competition with a prize of £3,000 (funded in part by the Arthur Koestler Foundation) was held in Berkshire.The winning entry was produced by three Westland Helicopters engineers, using rope, PVC pipe, a plank, string, a telescopic device and two stepladders.According to Rupert Sheldrake, the competition was organised by him and John Michell and "co-sponsored by The Guardian and The Cerealogist".