Good read, thanks for sharing.

Awesome story, thanks for sharing. This was a real great example of nature conservation.

They mine guano?

They mine it everywhere. They mined it in caves as well.

We're talking about bat shit right?

Very inspiring

Yup.

https://www.amazon.com/4lbs-Cavern-CultureTM-Organic-Fertilizer/dp/B07NPRGP1Z/

https://www.amazon.com/Dr-Earth-Pure-Natural-Guano/dp/B07B14FMFX/

Can also be bird shit. Like what the article is referring. Its an interesting read with a happy ending.

Before potassium mines and nitrogen extraction methods were discovered, bird droppings, typically from islands that were covered in mountains of the stuff, were the main source of fertilizer in the world and the main limiter of human population. Without these sources of bird poop, literally millions, potentially billions, would have died. You remember malthusianism? A fair bit of that was based on not having enough bird poop.

Huh! TIL

gauno refers to bird or bat droppings, in this case bird.