Start of the tour.
Cow manure goes in one end, releases gases as it decomposes which move up through the tube in the middle, and the poo comes out the other end ready for the garden.
The gas travels through the tube and collects in the big bag hanging from the ceiling, another tube connects the gas to the stove for cooking.
A blurry photo from the guinea pig barn.
Yum. Dinner.
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