Guano - Aeber, When Nature Calls

Guano has nitrogen phosphates, a lots of other stuff that is supervaluable in the industrial age. It could be used to produce things, or be part of the production process of goods like glass and bleached dye. The most important part of guano is all of the mineral nitrates that are found in the atacama desert. Because there's so little rain in this area, the stuff stays where it is because of the dry climate. This wasn't always a thing tha people were aware of. There was an asventura sequel when nature calls.