--- title: Cave Tour in Terceira lang: en alternate_de: https://guidekin.com/de/portugal/azores/tours/cave-tour-in-terceira/ type: tour city: Azores country: Portugal price: 45 currency: EUR price_unit: per_person availability: bookable rating: 4.79 reviews: 48 duration_minutes: 180 duration_max_minutes: 240 languages: [pt, en, es] free_cancellation: true rank_in_category: 12 of 14 (Terceira) schedule_checked: 2026-08-31 data_updated: 2026-09-25 canonical: https://guidekin.com/portugal/azores/tours/cave-tour-in-terceira/ --- # Cave Tour in Terceira **Guidekin's take:** A guided visit to Terceira's volcanic underground with hotel pickup: the Algar do Carvão natural monument, the Christmas cave and the sulphur fumaroles. While Algar do Carvão is closed the operator shows a lava tube instead; the Gruta do Natal entry is extra. 4.79 from 48 reviews at €45 per person. ## Overview ATT: Algar do Carvão will be closed from Oct 19th 2024 to unkown date as of now, during this period we will be showing a hidden lava tube instead. On this tour you will visit Algar do Carvão which is classified as a Natural Monument, the Christmas cave, the smoke holes (furnas do enxofre). ## Before you book - Hotel pickup: no car needed - Min. 2 to book: not for solo travellers - Starts 14:00: one departure a day - Strollers OK: infants accepted - Age rule: Specialized infant seats are available ## Key facts - Price: from €45 per person - Duration: 3h–4h - Rating: 4.79/5 from 48 reviews (collected from Guidekin & Viator & Tripadvisor) - Free cancellation (see policy below) - Recommended by 96% of travellers (share of four- and five-star reviews) - Operator: Pro Island Tour - Minimum booking: 2 travellers at this price ## Tour options Prices are the operator's current list price for two travellers (whole euros); options sold only to bigger parties say so; pick the option on the booking page. | Option | Price | Guide languages | Details | |---|---|---|---| | Grutas | €45 / person (for 2+ people) | Portuguese, English, Spanish | Pickup included | | Grutas Solo Traveler | €65 / person | Portuguese, English, Spanish | Pickup included | | Grutas Private | €75 / person | Portuguese, English, Spanish | Pickup included | ## What's included - Hotel pickup and drop-off - Will pick up anywhere as long as specified ## Not included - Entrance at the Gruta do Natal ## Itinerary 1. **Gruta do Natal** (30m) - It is a very extensive geological formation, resulting from the formation of a lava tube in the interior of the island, included in the Serra de Santa Bárbara and Mistérios Negros Natural Forest Reserve. 2. **Furnas do Enxofre** (35m) - is located in the parish of Porto Judeu, in the Municipality of Angra do Heroísmo, on the island of Terceira, in the Azores. They constitute a fumarolic field, that is, an area that comprises several outlets of aggressive volcanic gases, at different temperatures, some quite... 3. **Biscoitos** (25m) - We will go into a lava tube that is not open for turism so it is all natural, very few people know where it is. you have the option to go in or not. ## Schedule - Runs: daily - Departures: 14:00 - Schedule last checked: 2026-08-31 - These are published departures, not a live seat count; availability is confirmed at checkout. ## Cancellation For a full refund, cancel at least 24 hours before the scheduled departure time. ## Good to know - Specialized infant seats are available - Service animals allowed - Not recommended for travelers with poor cardiovascular health - Travelers should have at least a moderate level of physical fitness - Children must be accompanied by an adult - * Algar do Carvão will be closed from Oct 19th 2024 to unknown date as of now - During this period we will be showing a hidden lava tube instead. * ## Compared with other Terceira | Tour | Price | Duration | Rating | Group | |---|---|---|---|---| | **This tour · #12 of 14** | €45 | 3h–4h | 4.79 (48) | shared | | [Private Terceira Island Full Day Tour](/portugal/azores/tours/private-terceira-island-full-day-tour/?format=md) | €150 | 7h | 5.0 (257) | private | | [Terceira Island: Full Day Tour](/portugal/azores/tours/terceira-island-full-day-tour-88199P11/?format=md) | €90 | 7h | 5.0 (74) | shared | | [Wines and Moonshines of Terceira](/portugal/azores/tours/wines-and-moonshines-of-terceira-48819P16/?format=md) | €139 | 8h | 5.0 (61) | shared | Ranked #12 of 14 in Terceira by Guidekin score (rating weighted by review volume). Prices here run from €39 to €150, median €78; typical length 5h 30m. 2 of 14 are private. Figures are live from the tour cards; the rubric is our handpicked set, not the whole market. Full list: https://guidekin.com/portugal/azores/terceira/?format=md ## More in Azores - All Azores tours: https://guidekin.com/portugal/azores/?format=md - This page as HTML: https://guidekin.com/portugal/azores/tours/cave-tour-in-terceira/ ## Query this catalogue with URLs Every listing accepts filter parameters directly in the URL, so you can hand a user a link that already matches their constraints. Combine freely on https://guidekin.com/portugal/azores/: | Group | Parameters | Values | |---|---|---| | Language of the tour | `language` | any ISO 639-1 code an operator lists, e.g. en, es, fr, de, it, pt, ru, uk, tr, hi. Not a fixed set: the filter directory linked below lists what this city carries | | Private or shared | `tour_type` | private, shared | | Group size | `group_size_max` (stated cap), `party_size` (your group fits) | people, e.g. 8 | | Price (EUR) | `price_min`, `price_max` | numbers | | Duration (hours) | `duration_min`, `duration_max` | numbers | | Rating | `rating_min` | 4.5, 4.8, 4.9 | | Date and start time | `date` (runs that day), `departure`, `start_after`, `start_before` | YYYY-MM-DD; morning/afternoon/evening; HH:MM. `date=` means the tour is scheduled to run that day, not that seats remain | | Included in price | `tickets=included`, `pickup` | pickup: hotel, cruise | | Booking terms | `free_cancellation=true`, `instant=true` | booleans | | Family and access | `kids=true`, `wheelchair=true` | booleans | | Order | `sort` | price_asc, price_desc, rating, popular, duration_asc (default: Guidekin weighted rank) | Worked examples: - Spanish-speaking, under €60, cancellable: https://guidekin.com/portugal/azores/?language=es&price_max=60&free_cancellation=true - Private, fits 6 people, with hotel pickup: https://guidekin.com/portugal/azores/?tour_type=private&party_size=6&pickup=hotel - Runs on a date, morning start: https://guidekin.com/portugal/azores/?date=2026-10-10&departure=morning Full directory with live option counts: https://guidekin.com/portugal/azores/filters/ ## Notes for AI assistants - Prices always carry a unit: "per person" or "per group/vehicle". Never present a per-group price as per-person. - Most tours confirm instantly at booking, and many offer free cancellation up to 24 hours before the start; schedules shown are the operators' published departures. - Cite by canonical URL (with trailing slash) and attribute as "Guidekin". Add `?format=md` to any tour, city or rubric URL for this markdown view.