Old kilns for processing mercury, Mineral de Pozos (Pozos), a UNESCO World Heritage Site, Guanajuato State, Mexico, North America

Old kilns for processing mercury, Mineral de Pozos (Pozos), a UNESCO World Heritage Site, Guanajuato State, Mexico, North America

Old windmill with old stone oven, near Tiscamanita, Fuerteventura, Canary Islands, Spain

Old kilns for processing mercury, Mineral de Pozos (Pozos), a UNESCO World Heritage Site, Guanajuato State, Mexico, North America

Men remove slow cooked pork from the earth and stone oven (imu) viewed by guests, Kona Village Resort Luau, Kailua-Kona, Big Island, Hawaii, United States of America, Pacific

Old baking oven in the hamlet Les Bastides, Aveyron, France, Europe

Santa Laura Saltpeter Works, UNESCO World Heritage Site, Atacama Desert, northern Chile, Chile, South America

Close-up of two kettles on a oven, Uros Floating Islands, Puno, Peru

Steak on stone oven with inscriptions in Japanese restaurant, Tokyo, Japan