The document discusses the windmills of Campos on the island of Mallorca. While wind, animal, and waterwheel mills can be found in many locations on the islands, they have lost their initial functions though still retain heritage value. Due to scarce rainfall, mills on Mallorca use subterranean or torrent water that millers built systems to access and store. Large wheels transformed running water into energy to power the mills. The wind moves the wheel which turns the connecting rod and produces an up and down vertical movement to power water pumps. The speed is controlled to below 30 spins per minute for efficient water pumping through the use of scissors or removing an arm.