Descend into one of the world’s few visitable volcanic chimneys and walk a lava tube on this focused half-day tour of Terceira. Expect dramatic geology, fumarolic fields, and guided access to Algar do Carvão and Gruta do Natal.
More ways to explore the area's outdoor wonders
A cool wind brushes the rim as you peer down into Algar do Carvão — a vertical throat that lets daylight fall onto a green-fingered crater floor. The tour threads through cryptomeria groves, past the glassy calm of Lagoa das Patas, then drops into the shadowed corridors of Gruta do Natal where ancient lava once flowed like frozen water.
Difficulty
moderate
Duration
3 hours
Fitness Level
Participants should have a moderate fitness level: able to walk uneven ground, descend and ascend stairs, and tolerate short hikes.
Wildlife
History
Algar do Carvão is a collapsed volcanic chimney formed during ancient eruptions; the accessible interior preserves lava tube features and mineral deposits that speak to Terceira’s eruptive past.
Conservation
The sites are protected—stay on marked paths, avoid touching cave formations, and carry out all litter to minimize impact on sensitive subterranean and crater ecosystems.
Reserve your spot on the Half Day Tour - Algar do Carvão Lava Route today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Wear grippy shoes
Trails and cave floors are uneven and can be wet or slippery—sturdy hiking shoes with good tread are essential.
Bring a headlamp
Light helps in the Gruta do Natal and highlights geological details; a small spare battery pack is useful.
Mind the sulfur
Furnas do Enxofre emits a strong sulfur smell and warm ground—anyone sensitive to fumes or with respiratory issues should take caution.
Respect formations
Do not touch stalactites or cave walls—oils from skin damage delicate mineral deposits and living vegetation on the algar walls.
Sturdy hiking shoes
Tread and ankle support help on rocky, damp cave floors and uneven rim trails.
Headlamp or reliable flashlight
Interior of lava tubes can be dim—hands-free light improves safety and viewing.
Water bottle (1L+)
Hydration is important even on a short tour, especially in exposed sections around the algar rim.
summer
Light waterproof jacket
Weather on Terceira can shift quickly; a shell keeps you comfortable on damp, windy days.
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