Charcola Kilns Introduction: Charcola Kilns were built around 1875, mainly to refine pure silver from ore. There are 10 kilns lined up in a row, with an average height of 25 feet 6 inches and a diameter of about 30 feet. The appearance of the kilns on the shore is like the round spire of the Orthodox Church. To this day, the smell of burning juniper can still be vaguely smelled in the kiln.