I see this everywhere on the Canadian Shield in Ontario, for context
this post was submitted on 13 Jun 2025
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Lichen
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Lichen.
When purchasing my previous home, I asked the inspector about a suspicious goopy substance on a window.
"Goop," he labeled it, then advised me not to worry about it.
He was right; it was gone by the time we closed on the house and, as far as I could tell, never returned.
So anyway, are you that inspector? It would be nice to give him credit.
🙏