A Sunday afternoon bike ride got serious in a hurry for a group of motorcycle riders near Blackie.
The group was following a pick-up truck towing a trailer loaded with square hay bales when one of the bales fell or blew off the trailer.
RCMP say one of the cyclists, a 41-year-old Calgary woman collided with the hay bale at highway speed.
She was flown to a Calgary hospital with various injuries.
Speed and alcohol are not factors in this accident.
The 60-year-old High River man who was driving the pick-up towing the load faces various charges and the investigation continues.