The following images are of a Thick-skinned Cork Oak, or Quercus suber, planted in Adelaide's Belair National Park during the early 1900s.
Although one of the finest specimens in South Australia, the Thick-skinned Cork Oak is introduced to this state, and as such, this plant may not be replaced when it dies.
The plant is native to the temperate regions of Europe and northern Africa, where it can grow up to 20 metres high and reach up to 200 years of age.
Its thick bark is softish and spongy on the absolute exterior, yet much harder on the inside. It's particularly strong, solid and tough, and challenging to break off even the slightest piece.