She said she saw several ambulances, including one towing snowmobiles, driving toward the pass.

NPR: 5 Snowboarders Killed In Colorado Avalanche

An eyewitness saw a fire engine and ambulances, one towing snowmobiles, heading towards the pass, and two search dogs in the area of the slide.

BBC: Colorado Loveland avalanche kills five snowboarders

In May, North Wales Police stopped about 15 drivers, some towing motorbikes on trailers, in four hours of an operation at the Horseshoe Pass, Denbighshire.

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