1976. Surveyed in 1959-1960, 1965-1969 by Kittatinny Grotto and Northern New Jersey Grotto, the map shows multiple entrances and openings to the surface....
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1976. The Cave Location Map lists 142 caves in the following counties: Hunterdon, Morris, Somerset, Sussex, and Warren. It features locations of Precambr...
3. Leigh cave
1976. Surveyed in 1960 by Kittatinny Grotto and Northern New Jersey Grotto, the map shows rooms and different levels of the cave. It also features two in...