This circuit involves three separate trail segments. First, there's a quick, steep climb ascending 600 feet over a distance of about a half-mile. Whew! Then there's a long, flat, but extremely rocky section along the ridgeline of Blue Mountain. Finally, a side-trail returns the hiker to the starting point along a steep, downhill trail on an old logging road running beside a beautiful mountain stream called Furnace Creek, so named because it provided water for the nearby Windsor Iron Furnace in 19th century.
Many Appalachian Trail through hikers consider the Pennsylvania portion of the trail the most challenging of all because it is so rocky. The image below shows one of the most--but by no means the only--challenging section of this circuit hike.
The crest of the Appalachian Ridges is cloaked with a Mixed Oak Forest. This forest used to be called the Oak-Chestnut Forest, but the accidental introduction of the chestnut blight fungus in the 1920s all but wiped-out the American chestnut. It's niche was filled by chestnut oak (Quercus montana). The ridges are windy and cold, and the soil is acidic, well-drained and nutrient poor. Most of the trees are chestnut oaks, but there's a smattering of red and black oaks, black cherries, and birches in the woods, too. Labor Day usually offers a plethora of blueberries.
After three hours of hiking uphill and or crossing treacherous rocks, the third portion of the hike on the old logging road is a real treat.
Furnace Creek is beautiful along its entire length. Here, I discovered a small falls about two feet high. Just below this point, Furnace Creek is impounded behind a dam to provide drinking water for the borough of Hamburg, Pennsylvania.
Because of the depauperate soil and relatively harsh conditions in the Appalachian ridges, wildlife is not common--especially in November. We only saw one Pileated Woodpecker (Dryocopus pileatus), one Black-capped Chickadee (Poecila atricapillus), and one White-breasted Nuthatch (Sitta carolinensis) in addition to the Black Vultures. Oh, and a small Eastern Garter Snake (Thamnophis sirtalis) that startled us by crawling across the trail--in November!