# Boca do Inferno

What to do en Cascais and Estoril · Cascais and Estoril

Fuente: https://www.geocalia.com/en/portugal/lisbon-region/cascais/things-to-do/boca-do-inferno · Revisado: 2026-11-12

- Duración: 30 min
- Temporada: All year
- Para quién: Everyone; better with a swell

Viewpoint over a cave collapsed into the cliff · 20 min · Free · 2 km from the centre

A limestone cave whose roof collapsed, leaving a hole open to the sea: in heavy swell, the water rushes in and rises in foam. It is about 2 km from the centre of Cascais along the coastal path, next to the Guincho road, and can be seen from railings at the cliff edge.
Go with a swell or at sunset, and do not go past the railings: the edge crumbles. On foot from the Cidadela it is about 25 flat minutes, passing the Santa Marta lighthouse.

## Cómo llegar y contacto

- Coordenadas: 38.6913, -9.4313

## Cerca de aquí

- [Mar do Inferno](https://www.geocalia.com/en/portugal/lisbon-region/cascais/where-to-eat/mar-do-inferno), a 61 m
- [Casa das Histórias Paula Rego](https://www.geocalia.com/en/portugal/lisbon-region/cascais/things-to-do/casa-das-historias-paula-rego), a 802 m
- [Pestana Cidadela Cascais – Pousada & Art District](https://www.geocalia.com/en/portugal/lisbon-region/cascais/where-to-stay/pestana-cidadela-cascais), a 937 m
- [The Cidadela, the marina and the centre of Cascais](https://www.geocalia.com/en/portugal/lisbon-region/cascais/things-to-do/cascais-citadel-old-town), a 999 m
- [Hotel Baía](https://www.geocalia.com/en/portugal/lisbon-region/cascais/where-to-stay/hotel-baia), a 1.1 km
- [Santini Cascais Baía](https://www.geocalia.com/en/portugal/lisbon-region/cascais/where-to-eat/santini-cascais), a 1.3 km
- [Seafront promenade from Cascais to Estoril](https://www.geocalia.com/en/portugal/lisbon-region/cascais/things-to-do/cascais-estoril-promenade), a 3.3 km
- [Orbitur Guincho](https://www.geocalia.com/en/portugal/lisbon-region/cascais/where-to-stay/orbitur-guincho), a 4.6 km

Destino: [Cascais and Estoril](https://www.geocalia.com/en/portugal/lisbon-region/cascais.md)