Trip Planner:   Europe  /  Portugal  /  Central Portugal  /  Lisbon District  /  Cascais  /  Nature  /  Boca do Inferno
Boca do Inferno, Cascais
(4.1/5 based on 2,000+ reviews on the web)
Boca do Inferno, or "The Mouth of Hell," features a natural rock arch with a cave that is known for sucking in ocean waves and shooting water out the top. Nestled in a dramatic environment of eroded cliffs and enormous waves, the site is a well-known photography spot. You can easily reach it by foot, and then follow stairs and bridges around it to get a better view or climb down to the cave if the ocean is calm. Be aware, however, that locals advise against climbing due to the sharp rocks. Put Boca do Inferno on your schedule, and learn what else deserves a visit by using our Cascais trip generator.
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Reviews
TripAdvisor
  • On the outskirts of Cascais have this lovely place very strikingly the days of bad sea by the entrance of water under the stone bridge to the bottom of the hole. I went in December and there is parking surplus and where drink you.
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  • Only a few minutes from the center of Cascais one can experience a beatiful view of the sea breaking against the rocks of the coastline. It's best to go there on a gusty day when the sea is stormy. Wh...  more »
  • You get to Boca do Inferno after a nice walk through the houses very nice!! will be blood from going there in late spring early summer, the scenery further West in Europe.
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Google
  • Great sunny day visit during the week to get away from it all. Gets busy on weekends. Good views but there is a bit of litter about.
  • More or less interesting. While I like geological phenomena, it is not as impressive as other sinkholes. It looks nice with rough weather. Even in the same area near Adraga beach there is another similar formation, in my opinion, more spectacular
  • Great views, we walked from cascais town and took about 20mins stroll to the viewpoint. Doesn't cost anything to view.
  • Natural beauty, along the sea! Scary, but amazing view from the coast and the sea along Sintra/Cascais!
  • It's OK - nice viewpoint over the shore, but the shore itself is not that much. Close to Cascais though, and you can rent a bike at several places along the coastal bike pad.