Fly-tippers have dumped waste cannabis plants and electrical parts in a lay-by near North Cave.
The waste, which is believed to have come from the Hull area, included boxes and sacks of soil, hundreds of root balls and stems of cannabis plants, remnants of air ducting, electrical tools and equipment, and household items.
The waste was dumped in the B1230 lay-by at its junction with the A1034 to Market Weighton sometime during the evening of Thursday 11 July and the following morning. It has been removed and destroyed at the expense of council taxpayers.
East Riding Council is appealing for witnesses to the incident.
Nigel Leighton, the council’s director of environment and neighbourhood services, said: “Whoever did this drove around the East Riding countryside looking for somewhere to fly tip this waste.
“It is absolutely unacceptable. In cases where we can get evidence we prosecute and try to recover the costs.
“We live in a beautiful part of the country but there is a small minority who see a quiet road or lane as a dumping ground and spoil it for others.”
Report fly-tipping by calling 01482 393939 or visiting www.eastriding.gov.uk.
Those prosecuted in Crown Court face unlimited fines and up to five years in prison. Those prosecuted in Magistrates Court face fines up to £50,000 and 12 months in prison.