Furnace has a drywall circular thickness of 2.2 meters. The ordered accumulation in the interior of the limestone blocks allow to obtain a chamber below which constituted the feeding area of the fire.
The room calcining an inside height of 3.8 meters and an average diameter of 3 meters and could be loaded with about 20 cubic meters of limestone. The rock fragments came from the steep cliffs above Piedilago and were transported to the furnace with a cableway.
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