I skied down an open run today and nearly broke my neck. Just below a bump in the middle of the run was large hole, about 4 feet wide and 3 feet deep. Upon hitting the unmarked hole I was immediately ejected from both skis and landed with full force on my head. I have never in my life had such a bad fall. Both my neck and spine were injured. I was not able to ski any more runs that day. It is absolutely unacceptable for a ski resort to have no warning of danger on an open ski trail. The ski patrol at this resort do not do their job in keeping the runs safe for skiers.