Tuesday, August 13, 1878: Andrew Campbell discovered the Luray Caverns in Virginia, when cold air from a sinkhole on a large hill extinguished his candle.
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Tuesday, August 13, 1878: Andrew Campbell discovered the Luray Caverns in Virginia, when cold air from a sinkhole on a large hill extinguished his candle.
BONUS: You’ll also receive our Almanac Companion newsletter!
