I need to vent, I am angry and appalled, and just really can't believe what happened, I came around the trail at a moderate gait, boout 6mph, saw some kids dragging what appeared to be large branches around. I am thinking I hope they don't wave them at Mr spook monster,, any way as I get closer I see the little snots are booby trapping the trail, they are running about a 1 inch thick grape vine across the trail. They jerk it up in front of me about 1 to 2 foot off the ground as I stop and start yelling at them. There is an adult woman (mom maybe) standing right there watching them. And these are little kids, say 6 ish ?... I can't believe it, she is laughing, telling them come on that's not nice,,,,,,I tell her , :Not NICE ? You're the adult you stupid b@#$ch. I get a bit farther down the trail and call 911 and report them, park ranger went looking but hadnt found them..... seriously I just can't believe an adult would just stand there and think that was something ok to do.