Minas de Azufre: Geometric adventure in unique landscapes

  • Isabela Island, Galapagos - Ecuador
  • 0 booked
  • Duration: 5 Hours
  • Language: English/Spanish
  • Transport: Boat
  • Meals: Lunch, snacks and drinks.
  • Group: 12 people
Hiking tour to the Sulfur Mines in Isabela. Explore an active geothermal landscape with steam, mineral formations, and stunning views. Includes a naturalist guide, ground transportation, a boxed lunch, and an unusual experience.

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What you need to know about Sulfur Mines

  • Located on the western flank of the Sierra Negra volcano – the largest caldera in the Galapagos (10x9km) – at about 800m above sea level, accessible via the “El Cura” trail

  • It is a system of active fumaroles, where crystallized sulfur creates surreal landscapes of yellow tones and constant geothermal vapors.

  • A 6km round trip hike, with gentle descents, leads to the interior of the volcano, demonstrating the living geology of the archipelago.

Activity
What Gislands Tours offers you
Sulfur Mine Hike Guided walk along a nature trail, with views of active fumaroles, sulfurous rocks, and an explanation of geological processes.
Caldera and Landscape ExplorationPanoramic views of the caldera rim, views of fresh lava, and an explanation of volcanology

Hiking

100%

Interesting facts about Sulfur Mines

  • The Sierra Negra caldera is the largest of its kind in the Galapagos and one of the most active, with recent eruptions (2018).

  • Sulfur deposits come from the cooling of volcanic gases; yellow colors indicate high geothermal activity.

  • The 3–3.5km descent allows you to explore fumaroles and sulfur fields, connecting directly with the volcanic heart.

  • In some packages, a visit to the Sucre Cave or the Mango Viewpoint is added, improving the experience.

What's included

What is NOT included

Recommendation

Fauna found in Sulfur Mines

  • Lava lizards and Darwin’s finches, which inhabit scrubland areas

  • Endemic species of pioneer vegetation: ferns, wild guava and species adapted to volcanic soil.

  • Occasional sightings of bats and moorland birds, typical fauna of the island’s mountain range.

Frequently Asked Questions

¿What does a tour with Gislands Tours include?

All our tours include a certified local guide, ground and/or sea transportation, snorkeling equipment (when applicable), a picnic lunch or lunch at a local restaurant, and entrance fees when necessary. Always in small groups.

¿What should I bring on a full-day tour?
  • 👕 Comfortable and light clothing
  • 🩱 Swimsuit and towel
  • 🥾 Closed hiking shoes
  • 🌞 biodegradable sunscreen
  • 🕶️ Sunglasses and cap
  • 💧 Reusable water bottle
  • 🪪 Personal documents
¿Are the tours suitable for all ages?

Yes, most of our tours are suitable for children, seniors, and people with moderate mobility. If you have any specific needs, please let us know and we can customize the experience for you.

¿In what language are the tours given?

Our guides are trained to offer tours in Spanish and English. If you require another language, we can help you with customized options.

¿What is the best time to visit the Galapagos?

The Galapagos can be visited year-round. January through May offers warmer weather and calmer seas; June through December offers cooler temperatures and more marine life. Each season has its own unique charm.

¿How far in advance should I book?

We recommend booking at least two weeks in advance, especially during peak season (June-August and December-January), although we also assist with last-minute reservations subject to availability.

¿How to deal with motion sickness?

Here are some tips to deal with motion sickness:

  • 🥗 Avoid fatty and heavy foods before and during your trip. Opt for lighter meals.
  • 🍷☕ Avoid alcohol and caffeine, as they can worsen symptoms.
  • 📵 Avoid reading or using screens during the commute, as they increase nausea.
  • 🛌 Get plenty of rest, as fatigue can make dizziness worse.
  • 💊 If possible, take motion sickness medication before your trip. There are several over-the-counter options that can help.
¿What happens if there is bad weather?

Safety is our priority. If weather prevents the tour from taking place, we will offer alternative options or reschedule based on your dates.

¿Do you have any other questions?

Write to us via WhatsApp or email, and we’ll be happy to help you plan your experience in the Galapagos.

Route Map

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