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CorkOak1_jpg

Cork Oak

The oak trees in the hills of the Algarve region of Portugal are used to provide cork which is mostly used to seal wine bottles (see next photograph). A cork oak tree will not produce any useful bark until it is 40 years old but from then can have its bark stripped every 9 years with no ill effects. It will continue to produce bark for the rest of its lifetime, up to 200 years.