Boca do Inferno, Cascais

4.2
Must see · Geologic Formation · Nature / Park
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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. To visit Boca do Inferno and get the most from your holiday in Cascais, create itinerary details personal to you using our Cascais itinerary planning website.
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Boca do Inferno reviews

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TripAdvisor traveler rating
TripAdvisor traveler rating 4.0
4,135 reviews
Google
4.6
TripAdvisor
  • Nature is so amazing. The Atlantic Ocean crashes through the rocks in a great photo opportunity. Get your cameras ready. Hard to park on a weekend. 
    Nature is so amazing. The Atlantic Ocean crashes through the rocks in a great photo opportunity. Get your cameras ready. Hard to park on a weekend.  more »
  • What a shocking sight when you first lay my eyes on this sea cave. My imagination took me to a inferno world. As the waves crashing into the cave, sun shaken broke through the clouds form a... 
    What a shocking sight when you first lay my eyes on this sea cave. My imagination took me to a inferno world. As the waves crashing into the cave, sun shaken broke through the clouds form a...  more »
  • Stopped by to take a look, very interesting but probably spectacular on a rough windy day with the ocean crashing on the rocks. Nice views and good photo opportunity 
    Stopped by to take a look, very interesting but probably spectacular on a rough windy day with the ocean crashing on the rocks. Nice views and good photo opportunity  more »
Google
  • Beautiful place to visit. Nature was very generous to build something like this. It's easy to access the rocks, has stairs to help the walk to where you can take some good pictures and sit to enjoy the sunset. And you can walk just a couple of minutes and find interesting restaurants. The parking is public in the street, it's paid but very accessible.
  • The Inferno's Mouth is well dubbed. Around sunset, what looks like a few jagged rocks with mild waves, starts swelling and rising and crashing, pushing into the tunnel that has been created after thousands of years of erosion. The energy that the ocean has is palpable and minute by minute it gets more and more aggressive. It is awesome, in the purest form of the words definition. There are plenty of safe places for people to stand to watch this incredible performance. A distance away there is a peninsula with a pier that starts signaling its light -- posing some incredible scenes for picture-taking. Although it was the end of June, the place was not packed and it was easy to walk around to find scenic photogenic angles. There is no cost associated with attending this fine show and plenty of places to park. It is also surrounded by multiple restaurants and is a skip and a hop to Cascais. Beware of those selling souvenirs - they are bad quality and four times more expansive than in other places. If you're in the area, I definitely encourage you to visit Lucifer's jagged mouth. Also, if you look closely at my pictures, you will see a dragon (or is it just me) herding the waves into the mouth!
  • Guarded by countless laughing seagulls, the „Mouth Of Hell“ is one of the most beautiful landmarks near Lisbon. Completely designed by nature with its infallible hand, the area is presenting itself with a rough charm which is created when the sea and the wind as bride and groom come together to meet their best man, the rocks of a coast line. Over millions of years the natural forces created the shapes one can see today. The waves keeping on coming restless and powerful, pressing through the mouth into the basin you’re looking into when standing on the edge of the cliff. When you get lucky, the weather will be just fine. With a deeply blue sky of a color you will find nowhere else around the world. And bright sunshine, which lets the foaming water look like dusted with countless little gems. Look and take in this endlessness of the ocean. Breathe deeply and get a sense of what it is like to inhale the sunlight. Then close your eyes. And just listen: what the flooding and ebbing waves got to tell you. Whatever it may be, the seagulls will keep on laughing. At all of it.
  • Free natural attraction about a 25 minute walk from the city center, which is picturesque all on its own. The formation is very cool, would have been even cooler if it was high tide. Plenty of beautiful pictures of the formation and sea to be taken, also some cafes to eat and drink at as well as shops to wander
  • Wonderful natural landscape! Magnificent wild beauty! It is worth visiting and admiring the wonder of nature. Very expensive area with a few shops nearby. It had toilets near the road but you paid.

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