We were trail riding as a family in Jasper and coming back down the mountain.  There was a sharp corner leading onto a bridge at the end of the trail.  Our daughter was leading the group and barreling down the mountain.  We yelled ahead to remind her of the upcoming corner.  She didn't make the turn and ended up, bike and all, in the creek below.  She was successfully recovered and after some bike repairs and an ice pack was just fine.