A technique of roofing in stone-built chambers whereby successive courses of bricks or slabs are allowed to project a little further inwards than the course below until a curved or domed ceiling is achieved. The Maya used this method to create a corbelled 'false' arch, or vault with the earliest expressions in Late Chicanel tombs at Tikal and Altar de Sacrificios. The technique was also used within the megalithic tradition in Europe in some of the passage graves, such as New Grange and Maes Howe, and in the tholos tombs of the Mycenaean world. Babylonian architecture made wide use of corbel arches.