Monthly notes

Sight in Angra do Heroísmo

Algar do Carvão

Volcanic chimney in central Terceira you walk down into, 90 m to a lagoon with silica formations; €10. Closing from late Oct/Nov 2026 to Q1 2027 for works.

Address
Algar do Carvão, Porto Judeu, Angra do Heroísmo, Terceira
Hours
Tue, Wed, Fri, Sat 14:30–17:00 (Oct 2026); closing late Oct/Nov 2026 to Q1 2027
Price level
€€
Open in Google Mapsmontanheiros.com

Hard with kids

338 steps in total; the operator advises against it for babies and toddlers. Under-12s free.

The notes

What the sources say (research)

  • A volcanic chimney that, unusually, is not blocked: a 15 × 20 m mouth ending 90 m down at a clear-water lagoon, with milky silica stalactites and stalagmites. [Os Montanheiros, 9 Oct 2026]
  • The operator expects visits to be suspended from late October or November 2026 until the middle or end of the first quarter of 2027 to finish the new visitor centre. Until closure: Tuesdays, Wednesdays, Fridays and Saturdays 14:30–17:00; €10. Hours may change without notice. [Os Montanheiros, read 14 Oct 2026]
  • Two tunnels with 114 steps to the main platform, 338 steps in total; cemented floor. Not recommended for people with physical limitations, balance problems or claustrophobia, babies or toddlers, or late pregnancy. Under-12s free with a paying adult (the operator caps free admissions per day, so check). [Os Montanheiros]
  • No public transport to the cave. About 12 km, 14 minutes by car from Angra (routing model). [Os Montanheiros FAQ; OSRM]

Open questions