A trip to one of Pennsylvania’s 111 State Parks is as likely to uncover some of the state’s industrial past as it is to introduce you to natural wonders. Case in point, our visit yesterday to Canoe Creek State Park in Hollidaysburg.
In this case, it is the state’s once-thriving limestone industry that we learned a bit about. I say “a bit” because although you can view what is left of the two historic lime kilns (see photos below), the interpretation consists of three pretty worn interpretive signs, and the small museum/interpretation area at the park office was closed. (Double bad luck for us as we were hoping to get our recently acquired Pennsylvania State Park Passport stamped!)
One of the signs reminded the reader to think about how this quiet, seemingly bucolic parkland was once teeming with sound, sights, and smells. My imagination ran even further into the senses, speculating that you could probably have even tasted industry in the air as smokestacks belched, engines sent fumes billowing, and sweat poured off laborers.
Now, all we could hear was our own footfalls, a few distant crows calling, a woodpecker drilling for insects, and – when our trail skirted a scattering of homes on the outskirts of the park – a tinkle of wind chimes in the distance. The air was fresh in the mid-40s degree weather, and the dappled sun illuminated what was left of the autumn leaves in the tall maples, tulip poplars and oaks.
Ghosts and echoes of industry past, fitting for a Halloween hike.
Once you find it, after a steep (and rocky) climb, the Rock does not disappoint. It is a sizable formation that appears to be teetering precariously over the edge of the cliff, although it has been like that for centuries and presumably will be for centuries more. As impressive as it is, though, the Rock has not made it to the 
Even if I make it to Peru and that bridge some day, I don’t think I would muster the courage to walk across it. So, this Pennsylvania suspension bridge, maybe built by the