Enola Low-Grade Trail Trail conditions By pswag115 in 1/7/2012 12:12:24 PM | I'm not sure if the layer of stone on top is the same as the commenters from December experienced, but I can say that the top stone layer now is nothing that will give mountain or even hybrids any problems. Its not "pea" gravel or paved but 3/4" crushed stone. There is ballast type stone under and to the sides of the trail. The crime with the trail currently is that Sadsbury Township has posted the trail in their area "No Trespassing". Call them and complain!