Greek name (also Kanava = cellar) for the caves, such as those in large quantities on the Aegean archipelago Santorini
in the soft volcanic rock (pumice). There they are used as storage rooms and also often as a wine cellar. The island is 1,500 BC. Chr. Emerged from a huge volcano explosion. The rock glass, solidified from silica and gas rich lava, can be found in various forms as loose pumice sand and pumice gravel, as well as solidified pumice stuff. The more chamber-rich and bubble-rich tuff the soil has, the better the water storage capacity and the growing conditions for the vines.