CorbulaDesign by Jari Franceschetto Side or coffee tables with interior space made from used corks. Cork comes from the bark of the cork oak tree, which is primarily found in Mediterranean countries such as Spain, Portugal, and Italy. The bark is harvested every 9 12 years, and the process does not harm the tree. It is a renewable resource and also biodegradable. Materials: cork and metal. Sizes corbula 60: 60 x 29h cm (hole diameter 40) corbula 80: 80 x 37h