History and geology come together at this spectacular destination in Sussex County, showcasing one of nature’s best-kept secrets in the most amazing way. Photo by Michael Kucinski Mining takes on a whole new meaning in the tiny town of Ogdensburg — just a stone’s throw from the “Fluorescent Mineral Capital of the World” in Franklin — where one museum houses more than enough evidence to back up the lofty title. Upon descent into the Earth’s depths in rural Sussex County, an underground world concealed from the masses comes to light, its marvelous features a true hidden gem. Wandering through...