An "overhang" refers to a part of a structure that extends beyond its base or support. This can be seen in buildings, where roofs or balconies project outward, creating shaded areas or additional space. Overhangs are designed to protect walls and windows from rain and direct sunlight, improving energy efficiency and comfort. In nature, overhangs can also occur in rock formations, where a section of rock juts out over a lower area. These natural overhangs can provide shelter for wildlife and create unique landscapes. They are often found in caves and cliffs, contributing to the diversity of ecosystems in those regions.