It's located on Mount Huashan.
Words from the author: "We ride down a trail that is across the street from this guy's house, nowhere near his property. He simply didn't like that so he put nails on the trail and we would still ride by because that's how we go to our riding spot. I tried talking to him, letting him know we are just riding by, but he just cussed me out. So his solution was to get in his car, follow us and then proceed to try and hit us. Just a crazy old dude."
Even weirder than the original