The parish's southern coast is formed from a high arriba, marked by its only major geological structure, the Ponta das Cinco, a rocky spur formed by a basaltic dike that penetrated one of the radial faults, along the Serra de Santa Bárbara. Yet, running through the region are several smaller volcanic cones composed of black or red basaltic rock. The lower part of the parish developed along a planar zone that corresponds with the terminal area of basaltic fissural flows from the region of Pico da Bagacina, resulting in a gently sloping area towards the northwest. This area is occupied by relatively recent lava flows, with little evidence of pyroclastic eruptive material, translating into shallow soils and rocky covering.