strange hole the tree

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Strange hole in a tree trunk Royalty Free Stock Photo

Hole in tree trunk Royalty Free Stock Photo

Strange tree hole Royalty Free Stock Photo

A tree stump with a hole in it Royalty Free Stock Photo

Small lizard coming out a tree hole Royalty Free Stock Photo

An unusally shaped hole in a tree truck found in a tropical forest Royalty Free Stock Photo

This hollow in tree like strange face Royalty Free Stock Photo

A tree trunk with a hole in it Royalty Free Stock Photo

a strange hole on the tree Royalty Free Stock Photo

Piece of a hollow tree trunk with a dark tunnel hole Royalty Free Stock Photo

Hornbill female in the tree nest hole, eye on the dark brick up nest. Southern Yellow-billed Hornbill, Tockus leucomelas, bird Royalty Free Stock Photo

Green hole in the tree Royalty Free Stock Photo

Tree holes can be caused when an injury to the tree, such as breakage of a limb, creates an opening through the bark and exposes the sapwood. The sapwood is attacked by fungi and bacteria, which form a cavity in the bole of the tree. The resulting cavity can fill with water, thus becoming a type of phytotelma.