What were the first ovens?

The first ovens were simple pits dug in the ground and heated with hot coals or wood. Eventually, clay and stone ovens were developed, which were more efficient at retaining heat and cooking food evenly. The earliest known ovens date back to the Paleolithic era, around 25,000 years ago. These ovens were used by nomadic people who cooked their food over open fires. Early ovens were also used in ancient civilizations such as Egypt, Greece, and Rome. In these cultures, ovens were used to bake bread, roast meat, and cook other foods.