A map of Wiconisco Township, Dauphin County, Pennsylvania, from 1858, showing coal mining operations of the Lykens Valley Coal Company at Bear Gap – between Coal or Thick Mountain, and Big Lick Mountain. Short Mountain is not named on the map, nor is the Bear Valley shown between Coal Mountain and Big Lick Mountain.
A double rail line is shown heading north from Lykens into the Bear Gap where the coal mining was taking place.
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