Forbes State Forest: Roaring Run Natural Area Loop Trail Professional Review and Guide
"The first portion of this hike crosses Roaring Run 32 times (including tributaries) at my count; I’ve read 28 in other places. Either way, it’s quite a few. Some of these crossings may prove challenging. I recommend this hike in early autumn when the water is lower and the steep, scenic descent of the second portion features spectacularly colorful views of the valley.
The Roaring Run Natural Area is named for its complete mountain stream and watershed, which are protected within this 3,593-acre natural area, the largest in Pennsylvania. Located along the western slope of Laurel Ridge, it has a history of repeated logging. Today, it is slowly returning to its natural state, and only the varied age of the trees, former logging roads, and old railroad grades provide clues that humans once removed its valuable timber."