Fig. 6.
Installation of log hollows. (left) An arborist installing the log into place at a tree crotch. (right) Arborists hoist a heavy log up the host-tree. (© Dan Parker and Stanislav Roudavski)

Installation of log hollows. (left) An arborist installing the log into place at a tree crotch. (right) Arborists hoist a heavy log up the host-tree. (© Dan Parker and Stanislav Roudavski)

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