Abandoned lime kiln, Johnsonburg Swamp Preserve, Warren County.
Many years ago, farmers took advantage of the area's limestone-rich soil by burning the limestone in the kilns and spreading the ash, or quicklime, as fertilizer. Machines have long since replaced lime kilns; however, many of these relics survive in the dense forests that have reclaimed much of the farmland.
The Nature Conservancy owns and manages the preserve.
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