How can a gum tree survive

You know that Grace, my daughter and I walk in a park like setting/forest in Newmarket, Ontario. well we've seen this bare tree (and only this one) in the forest.
I know these trees are growing in a much warmer climate like in Australia for instants.
I goggled to find out about the scribbles on the tree.

This is what it says:
"Moth larvae bore a meandering tunnel through the eucalypt tree's bark at the level of the future cork cambium, a growth layer within the bark. ... It now grows rapidly to maturity, leaving the tree to spin a cocoon at its base where it pupates. Not long after, the bark cracks off, exposing the iconic scribbles beneath. Nov 27, 2012"

[moni kozi]

Wow! How interesting

[Diana]

Such a great shot and interesting info.

[Susan Wakely]

Interesting information.

[Beryl Lloyd]

Interesting find and information !

[KoalaGardens🐨]

parts of Australia get quite cold, even snow. the scribbly gum does grow quite a way down south and it looks like it has quite thrived there

[carol white]

A great find and narrative

[Joan Robillard]

Fascinating find

[Pyrrhula]

Great find, shot and explanation.
( there are more reasons to grow those crops. One is to steralise the soil from insects.)

[Rick Schies]

That's quite interesting

[Fisher Family]

An interesting find, and thank you for discovering the explanation and sharing it with us.

Ian