They took advantage of the unevenness of the terrain to build the necessary infrastructure, which usually consisted of a round well about 2.5 meters wide and 3 or 4 meters high. In this way, almost half of the shaft was held against the earth itself, the lower part was where the fire that was to convert the limestone into quicklime was fed.
Then with water it was transformed, it was extinguished, the ancients said, because quicklime was very dangerous because it burned what came in contact with it. Everything is quite removed and the lower part is not fully visible. By holm oak we find the vein, a large hollow that served as a quarry.