The woman was treated for a leg injury and transported off the mountain on a sled, Whistler Blackcomb said in a statement. She was transported to the Whistler Medical Clinic for further treatment. Patrol searched the area and determined no one else had been involved. The area was called clear at 3:35 p.m. In the meantime, Peak Chair was shut down at 2:20 p.m. and closed for the day. There had been 18 cm of snow in 12 hours by Sunday morning and ski patrol had conducted avalanche control work in the Whistler Bowl that morning, officials said. “Safety is of paramount concern at Whistler Blackcomb,” the statement said. “Alpine conditions change rapidly. Guests are reminded to be careful in the alpine, especially during low visibility conditions.”