Covão Cimeiro is an amphitheater with abrupt walls, with slopes that reach up to 300m. It is one of the most spectacular examples of the glacier circus of Serra da Estrela. It is an example of a glacier landscape, and its characteristic of being excavated and poorly drained is called ombilic. The convex rock that almost closes the depression is called verrou, which in Portuguese is called the Glaciárico bolt. Its almost polished side surface is due to the abrasion caused by the mass of ice over 300m high, which moved towards the Vale do Zêzere.