As narrow as the abyss
The Portal do Inferno is located at the center of the Gralheira Massif, at about 1000 meters altitude, over early Ordovician metasedimentary rocks, shaped by the external geodynamics agents, that give a steep aspect to the landscape. Surrounded by two streams (tributary of the Covas do Monte stream, at East, and tributary of the Palhais stream, at West) that drain the place in opposite directions, this was always a steep local that scared for a long time everyone who went through here. It is a local of high panoramic interest, especially for the “claw”, that is a mountain cut by several deep water lines, remembering the finger separation of a bird claw. Spring is the best season to enjoy this amazing view, as the “claw” seems to be painted yellow and pink because of the broom, furze and heather flowering.