The trees in this image from my Cataract Gorge collection happen to be touching each other. In ancient Celtic legends such as Tristan and Isolde, the star crossed lovers are buried on opposite sides of a river to keep them apart even in death, but two trees sprout on the grave sites and grow interlocking branches across the river despite.
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This outside link is about Tasmanian Devils, a delightful animal with extremely strong teeth.http://www.tassiedevil.com.au/tasdevil.nsf