Best canyons around Colares are characterized by dramatic coastal cliffs and unique geological formations rather than traditional river-carved gorges. Situated between the Sintra mountains and the Atlantic Ocean, Colares offers a landscape of rugged beauty. The region is known for its impressive natural monuments and diverse terrain, providing opportunities for outdoor exploration. These formations contribute to the area's geological interest and natural allure.
Last updated: November 1, 2026
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The Höllenschlund lives up to its name during storms/bad weather and lashing waves. But even in 'normal weather', this is simply a wonderfully scenic spot.
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Place of interest in Cascais visited by all tourists! Generally, in spring and summer, the sea is calm and Boca do Inferno has little movement. But if you get to see it in autumn or winter after a storm, the mouth roars and has an inexplicable energy 🌊
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Exciting, large, deep rock hole with a connection to the water. If you carefully look down into the chimney-like rock hole, you can see (and even hear) the surf pouring through the tunnel- or gate-like opening in the coastal rock into the hollow.
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East of the Mouth of Hell (Boca do Inferno), a bizarre, rugged rocky landscape stretches along the banks of the Tejo.
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Great view of Boca do Inferno and the mighty power of the Atlantic
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Try to be there early morning to avoid the heath and too many touristists on the track.
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incredibly beautiful, the Atlantic shows the power of the water here. A beautiful natural spectacle, I could watch for hours
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Colares is renowned for its dramatic coastal cliffs and unique rock formations rather than traditional river-carved canyons. You'll encounter stunning granite, syenite, and sedimentary rock formations, often with basalt dikes. Notable features include prominent sea stacks at Ursa Beach and the sheer drops at Cabo da Roca, offering breathtaking natural spectacles.
Yes, the most prominent natural attraction is Boca do Inferno (Hell's Mouth), a dramatic chasm where the ocean crashes into the cliffs. Another interesting area is the Rocky coastline east of Boca do Inferno, which features a rugged landscape. While not a traditional gorge, the Rocky Trail to the Beach (Parque Natural de Sintra-Cascais) also offers a challenging descent through a gorge-like setting to the beach.
Yes, the region offers diverse terrain for hiking. For example, the Rocky Trail to the Beach (Parque Natural de Sintra-Cascais) is a challenging route with steep sections and some scrambling. The wider Sintra-Cascais Natural Park provides many opportunities for exploring the rugged coastline and natural beauty on foot.
The Colares area is excellent for cycling. You can find various routes for different skill levels, including traffic-free bike rides and road cycling routes. For instance, there are several routes around Colares for traffic-free cycling and road cycling, allowing you to explore the scenic coastline and natural park.
Yes, Boca do Inferno is considered family-friendly. It's a popular tourist spot with stunning views and easy access to the viewpoint. While the power of the ocean can be awe-inspiring, the main viewing areas are safe for visitors of all ages.
The coastal areas around Colares are beautiful year-round. However, for the most pleasant weather for outdoor activities like hiking and cycling, spring (April-May) and autumn (September-October) are ideal, offering mild temperatures and fewer crowds. Summer is also popular but can be warmer and busier. Winter offers a dramatic display of the ocean's power, though some paths might be slippery.
When visiting the coastal gorges and trails, it's advisable to wear comfortable walking shoes, especially if you plan to explore rocky areas or trails. Bring layers of clothing as coastal weather can change quickly, and a windbreaker is often useful. Don't forget water, sunscreen, and a camera to capture the spectacular views.
Many of the natural attractions, like Boca do Inferno, are accessible by car with parking available nearby. Public transport options, such as buses, also connect Colares to surrounding towns like Cascais and Sintra, from where you can reach key coastal points. For a more scenic approach, cycling routes are also available to reach these areas.
Visitors frequently highlight the incredible beauty and raw power of the Atlantic Ocean on display at Boca do Inferno. Many describe it as a 'beautiful natural spectacle' and enjoy watching the waves crash into the chasm. It's also appreciated for its stunning cliffs and as a great viewpoint, often with ice cream shops nearby.
Absolutely. Boca do Inferno itself is a prominent viewpoint, offering dramatic vistas of the ocean and cliffs. Further west, Cabo da Roca, the westernmost point of continental Europe, provides spectacular panoramic ocean views from its wild, cliff-edged landscape.
Yes, for those seeking a more demanding experience, the Rocky Trail to the Beach (Parque Natural de Sintra-Cascais) is described as challenging, requiring surefootedness due to its steep and rocky sections with some scrambling. This trail offers a technical descent to a beautiful beach.
Yes, popular spots like Boca do Inferno often have amenities such as cafes, restaurants, and souvenir shops nearby, catering to visitors. In Colares and the surrounding towns, you'll find various options for refreshments and meals.


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