Kaymaklı is an ancient underground city located in the Cappadocia region of Turkey. It is one of the largest and most well-preserved subterranean settlements, featuring a complex network of tunnels, rooms, and ventilation shafts. The city was carved from soft volcanic rock and could accommodate thousands of people, providing shelter during invasions. The underground city consists of multiple levels, with each level serving different purposes, such as living quarters, storage areas, and places of worship. Visitors can explore its narrow passageways and discover unique features like wine presses and communal kitchens, showcasing the ingenuity of its ancient inhabitants.