ISABELA ISLAND · VOLCANIC HIKING EXPEDITION

Sulfur Mines & Sierra Negra

Hike inside one of the Galápagos’ most dramatic volcanic landscapes, where active fumaroles and vivid yellow sulfur deposits reveal the island’s geothermal energy.

Duration6 hours
Group size
ActivityVolcanic hiking
Meeting pointIsabela Island
Early-morning departure from Puerto Villamil · Approx. 6 hours

Activity balance

Hiking80%
Volcanic exploration20%

ISABELA’S GEOTHERMAL HEART

Fumaroles, sulfur & a vast volcanic caldera

The Sulfur Mines Tour is a unique hiking experience inside the Sierra Negra Volcano caldera, one of the archipelago’s most active volcanoes. Explore yellow sulfur deposits formed by volcanic gases released from fumaroles and fissures.

Active steam vents, panoramic crater views and dramatic volcanic terrain offer a powerful connection to Isabela’s geological history.

EXPEDITION ITINERARY

Your day at a glance

  1. Departure & National Park registration

    Hotel pick-up in Puerto Villamil and transfer to El Cura station for National Park registration before traveling to Sierra Negra’s crater.

  2. Sierra Negra Volcano

    Begin a guided hike inside the caldera of one of the most active volcanoes in the Galápagos, with a 10 km-wide crater and impressive volcanic scenery.

  3. Sulfur Mines

    Discover bright yellow sulfur deposits formed by volcanic gases from active fumaroles and fissures in a surreal geothermal landscape.

  4. Return to Puerto Villamil

    Return to town with a brief stop at a local farm before arriving back in Puerto Villamil.

Included

  • Naturalist guide in English/Spanish
  • Snacks
  • Transportation

Not included

  • Extra soft drinks
  • Alcoholic beverages
  • Short wetsuit
  • Tips

What to bring

  • Comfortable walking/hiking shoes
  • Please bring your own reusable water bottle.
  • Sunscreen, hat & sunglasses
  • Camera & binoculars
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TRAVEL WITH PURPOSE

Your journey can open a door to science.

Every completed direct booking helps make field-based Galapagos education more accessible. Galapagos Trails allocates 1% of eligible completed bookings to approved Galapagos Science Access expeditions.

01You travelChoose a journey designed by our local team.
02Trails allocates 1%After an eligible direct booking is completed.
03Students access GalapagosFunds support verified educational expeditions.
Explore Science Access

The contribution is made by Galapagos Trails and is not an additional charge to the traveler. Program terms apply.