A 57-year-old southern Alberta woman is in critical condition after falling down a coulee while on horseback.
The woman, who's from Medicine Hat, was taking part in a trail ride in Police Coulee, just south of Writing-on-Stone Provincial Park.
The horse she was riding lost its footing, and they both fell 25 metres to the bottom of the coulee.
The horse is OK, but the rider suffered severe head injuries in the fall.
Fire, police and rescue units from Milk River and Coutts responded.
They had to move the woman more than 150 metres to the top of the coulee so STARS air ambulance could take her to Foothills Hospital in Calgary.