Monthly notes

Sight

Gruta do Natal

697 m lava tube in central Terceira with a one-way circuit and high ceilings; €9, open daily April–September and four afternoons a week October–March.

Address
Gruta do Natal, near Lagoa do Negro, Biscoitos, Praia da Vitória, Terceira
Hours
Oct–Mar: Tue, Wed, Fri, Sat 14:30–17:00; Apr–May: daily 14:30–17:00; Jun–Sep: daily 14:00–18:00. Closed on listed holidays and 24/31 Dec; check operator for changes.
Price level
€
Open in Google Mapsmontanheiros.com

OK with kids

Loop route, but uneven ground in places; the operator advises against it for babies and toddlers. Under-12s free.

The notes

What the sources say (research)

  • Lava tube 697 m long, described as mostly easy going with high ceilings, though the safety notes and FAQ also mention uneven, rough ground and steps; the circuit loops so you don’t return the same way. Signposted from the road to Biscoitos. [Os Montanheiros, 9 Oct 2026]
  • October–March: Tuesdays, Wednesdays, Fridays and Saturdays 14:30–17:00; April–May daily 14:30–17:00; June–September daily 14:00–18:00. €9; under-12s free with a paying adult. Closed on listed national holidays, 24 and 31 December and Carnival Tuesday. Hours can change without notice. [Os Montanheiros]
  • Not recommended for babies or toddlers, people with balance problems or claustrophobia. No public transport. [Os Montanheiros]
  • The operator places the cave about 12 km from Angra do Heroísmo; it says there is no public transport to the cave. [Os Montanheiros]

Open questions