someone is placing boulders in the middle of the trails at Renni,,found out yesterday as I was going into the top of the Tyvola section going into the roots before the first berm, dead center in the middle of the trail where you are going fast into...Becarefull...there are numerous rocks all the through the trail I removed..I ran into a walker with her dogs and she said the trail should be changed , it was to swithchy for her and she thinks we don't need to be out there..I told her it was built for mtn.bikes and built by mtn.bikers ....that is all and one more thing , there is a tree down on the entrance right after you go over the bridge on the upper section of the disc golf course. I do not have a chainsaw but I managed to go around it..so watch yourself...RAMFB...Renni Backwards ,,always...