Underground homes are residences built below the surface of the ground. They are designed to take advantage of the natural insulation provided by the earth, which helps maintain a stable temperature throughout the year. This can lead to energy savings and a reduced environmental impact compared to traditional above-ground homes. These homes can be constructed using various materials, including concrete, earthbags, or straw bales. Many underground homes feature large windows or skylights to allow natural light in, creating a comfortable living space. They are often found in areas with extreme weather conditions, as they provide protection from harsh elements.