👉 Archais, also known as arches or archs, are a group of interconnected curved structures that form part of the Earth's surface. These features include mountain ranges, valleys, and river valleys, which are often formed by erosion, weathering, and glacial activity. In geology, archais can be defined as the continuous layers of sedimentary rock that are deposited on top of a base layer of basaltic or granite rocks. The thickness of these layers is typically several kilometers to
