👉 Cathole is a type of rock formation that forms in the earth's crust. It is composed primarily of silicate minerals, such as quartz and feldspar, which are found in large quantities in various rocks. The formation of catholes can occur at various depths and in different geological environments, including arid deserts, hot springs, and volcanic areas. Cathole rocks are often found in the form of small, rounded or irregularly shaped blocks, with a smooth surface and a low