Hell's Mouth: Top Tours & Activities
Sintra Und Cascais, Paläste, Natur Und Meerblick – Private Ganztagestour 4X4
Duration: 8 hours
Sintra Tour: Pena Palast, Cabo Da Roca, Cascais Und Estoril – Ganzer Tag Mit Mittagessen
Duration: 9 hours
Top Attractions in Lisbon District
About Hell's Mouth
The Boca do Inferno is an interesting cliff formation close to Cascais, which has been given an overly dramatic name of Hell's Mouth. The ceaseless pounding of the Atlantic Ocean on the cliffs chiselled out a small cave, which subsequently collapsed forming a small bay and natural arch.