I'm a novice hiker and have only been on the AT in New Jersey. While staying at a shelter I was reading the log. There were several references from Thru-Hikers about the rocks in NJ. Some were hoping the rocks ended soon, others stated that it was hard on their knees, etc. I know that the surface of the AT on the sections I've hiked has been very rocky. So my question is: What is the surface like in other areas? Is the rockiness distinct to the NJ section? Just curious. Thanks.