Ruins of the Lehigh Tannery
April 5th, 2010
From the park information plaque:
Hemlock bark provided the tannic acid used to cure as many as 50,000 hides a year, making this the second largest tannery in America during this era. The river and the forest paid an enormous price for the Tannery's good fortune. Wastes dumped into the river turned it black. Logging created a landscape littered with the debris of abandoned trees cut only for their bark. In 1875, an uncontrollable fire ignited and swept across the forest floor, engulfing and forever destroying the tannery.
On a lighter note, I just met some college kids out on a photojournalism assignment. They were excited by the encounter, but they did have one regret: "Man, I wish we had some weed to share with this guy."