i'll bet that young lady's heart is still thumping. so good they got to her... and it was brushy...
   have you ever seen fails of people on slip and slides...or 18" tall pools?  
   trail walking is a favorite camping thing for me - i used to power walk old logging roads and some trails. ran into a couple really narrow trails and one that slid out under my foot. fortunately most my weight was towards the wall and i just threw myself towards the wall. i ended up sitting with my right leg over the edge bent  at the knee. i kind of laid against the wall and thought how i was going to move my weight.. was it going to break loose even more? . scared spitless.  could have gone either way - i was just lucky.