According to the diagram, the smokery has three chambers linked with each other by air passages at their bottoms. Two chambers are underground while the smoking box at the end of the process in above the ground.
As regards the working mechanism of the system, first, the lid of the first underground chamber is opened to feed the smokery with fresh air. Then the air travels to the second underground chamber to burn logs of firewood to create smoke. After that, the smoke finds no way to escape through the top of this chamber because of its closure by a lid, but it is forced by the air supply to continue to move to the third and final section of the system. In particular, smoke is channeled through a pipe up to the smoking box on the ground where fish and meat are hung for being smoked.
