Around 4:30 pm on Sunday I was in the hot pool with my wife, my son & his girlfriend when a huge mudslide came down right beside the resort. Sounded like a freight train coming getting louder & louder. Matter of fact that is what I thought it was, a freight train. Then I saw the trees just outside the pool area where there is a walkway & RV parking start to violently shake & disappear all the while this deafeningly loud rumble & grinding noise was going on. I knew something bad was happening just 200 feet away. The lifeguards started yelling for everyone to get out of the pool NOW!!!! & people ran in panic. Was a surreal experience. Didn't have time to be scared until afterwards. Everyone just cleared out... I don't think anyone was hurt but My God!!! Thinking about it later in the car coming back to Calgary it was pretty mind blowing!!