Is the trail suitable for children?

Yes, the hike is recommended for children aged 8 and above who are prepared for moderate walking.

Yes, certified guides accompany all hikes to ensure safety and enrich the experience with local knowledge.

What is included in the tour?

The package includes pick-up and drop-off transfers, picnic lunch, walking sticks, insurance, and guide services.

Can I swim in the waterfall?

Swimming is not allowed directly under the waterfall, but you can enjoy the warm pools beneath it safely.

How difficult is the hike?

The trail is considered moderate, with some uneven terrain and tunnel passages but is accessible to most fit hikers.

Comfortable footwear, water, sun protection, a flashlight for tunnels, and layered clothing for changing weather are recommended.

Explore Água de Pau Volcano: Janela do Inferno Hike & Caldeira Velha Thermal Pools in São Miguel | Hiking | Attraction

São Miguel Island, part of Portugal’s Azores archipelago, invites adventurers to its volcanic heart with the Janela do Inferno trail, a hiking experience that reveals the rugged beauty of the Água de Pau volcano’s southern slopes. This trail transports hikers through a unique volcanic landscape marked by lush vegetation, rustic aqueduct tunnels, and tranquil streams winding through verdant pastures, culminating in a breathtaking waterfall formed by millennia of water erosion. Paired with a rejuvenating soak in the warm, mineral-rich thermal waters of Caldeira Velha, this excursion perfectly blends active exploration and natural relaxation.

The Janela do Inferno path begins near the Casa da Água at the base of Água de Pau, the island’s largest stratovolcano. As you venture into the forested terrain, the trail snakes through four historical tunnels once used for water supply—now atmospheric passages lined with moss and filtered light. These tunnels remind you of the island’s blend of natural wonders and human ingenuity. Along the way, expansive views open to the Atlantic, framing the municipalities of Lagoa and Ponta Delgada. Happy cows dot the green pastures, adding a pastoral charm unique to the Azorean countryside.

The flora is vivid and thriving here, shaped by the mild climate and volcanic soil—expect to see endemic plant species thriving alongside ferns and vibrant wildflowers. Birds trace the edges of the canopy, while the peaceful flow of streams under rustic footbridges invites quiet pauses. At the trail’s end, the spectacular waterfall cascades into a serene pool, a natural showpiece carved from lava rock and shaped by the island’s volcanic history.

After invigorating your senses on the trail, plunge into the famous Caldeira Velha’s thermal pools. These warm, iron-rich waters soothe tired muscles and offer a naturally heated sanctuary against the backdrop of dense forest. For those seeking deeper relaxation, a short stand beneath the waterfall provides a natural massage that eases tension and creates an unforgettable sensory experience.

Organized hikes include certified guides, pick-up and drop-off transfers in Ponta Delgada, safety insurance, picnic lunch, and walking sticks, making for a well-supported adventure accommodating hikers aged 8 and above. The moderate 8-hour trip requires comfortable hiking footwear, layered clothing options for variable weather, and essentials like water, sun protection, and a flashlight for the tunnels.

This trip showcases São Miguel at its wildest and warmest—melding volcanic geology, serene landscapes, and cultural history through a hike followed by thermal indulgence. The Janela do Inferno plus Caldeira Velha experience stands apart as a must-do for visitors eager to explore the Azores’ extraordinary outdoor recreation and immerse themselves in the island’s living geological story.

About Fun Activities Adventure

Fun Activities Adventure is an adventure company based in Vila Franca Do Campo, Açores. It organizes a broad range of outdoor experiences across São Miguel island, including stand up paddle (SUP) excursions, coasteering, canyoning, guided hikes, e‑bike tours, kayaking, and equipment rentals. The company operates both guided and self‑guided options to suit beginners, families, and experienced outdoor enthusiasts.

Trips include SUP Experience on Lagoa Azul, SUP rentals in Sete Cidades, coasteering along Caloura, multiple canyoning routes such as Salto do Cabrito and Ribeira da Salga, and E‑Bike itineraries around Sete Cidades and Ribeira Grande. Trail offerings cover Lagoa do Fogo, Salto do Prego – Sanguinho, Ribeira Funda – Maia, and other scenic routes that highlight volcanic landscapes, waterfalls, and coastal views. E‑bike and bike rental services support independent exploration.

Fun Activities Adventure emphasizes local knowledge and customer-focused itineraries. Guides and instructors use route familiarity to tailor tours to ability levels and interests, offering both adventurous activities and more relaxed scenic options. Custom tours are available through the "Outros - Tour´s Personalizados" service for travelers seeking tailored experiences.

Operating from Vila Franca Do Campo, the business serves visitors across São Miguel, connecting guests to iconic sites such as Sete Cidades, Furnas, and Lagoa do Fogo. Safety-conscious planning and transparent descriptions of each trip help guests choose suitable activities. Fun Activities Adventure provides clear trip information, on-site rentals, and a varied portfolio that appeals to those seeking active outdoor experiences in the Azores. Bookings are available year-round with flexible scheduling options online.