According to Wikipedia, Greenwood Furnace began as a historic iron-making center, though a ghost town is all that remains of the community. Prior, the region was inhabited by the Juniata tribe, which translates to The People of the Standing Stone, the article continues. The iron furnace, which you can still visit to this day, began operations in the 1830s, and was later followed by sawmill - and even a tavern. A tree nursery operated through most of the 1900s, producing as many as three million seedlings per year during its peak in the 70s and 80s.

Following old logging roads from the 1800s, most of this run is moderately difficult compared to the rest of Rothrock. Restrooms and potable water are available within the park, and the campground offers 50 sites, most with an electric hookup. Hunting grouse, squirrel, deer, and turkey is permitted in the park, and ice fishing draws in visitors during the winter.

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