The village is located at the northeastern end of the gap, around the source of Swabia Creek. The Catasauqua and Fogelsville Railroad was extended to the village in 1865, to carry magnetite from the mines in the vicinity, largely owned by the Thomas Iron Company. These mines were among those selected by Thomas Edison for experiments in magnetic beneficiation of iron ore, by which he hoped to make iron mining in the northeastern US cost-effective. The availability of cheap Mesabi Range ore defeated his plans, and the mines and railroad were abandoned after World War I. The geological origins of the deposits have been the subject of recent research.
^Kulp, Randolph L., ed. (1962). History of Lehigh and New England Railroad Company. Lehigh Valley Chapter, National Railway Historical Society, Inc. p. 70.CS1 maint: Multiple names: authors list (link)