Isabela Island: The Volcanic Giant of Galapagos

🌋 The Land of Fire: Sierra Negra Volcano

Isabela is home to Sierra Negra, which boasts the second-largest volcanic caldera in the world (about 10 km in diameter).

• Recent Activity: Its last major eruption was in 2018, but it remains one of the most monitored volcanoes globally.
• The Experience: Hiking to the rim of Sierra Negra offers an “otherworldly” view of the basaltic caldera and the sulfur fumaroles of Volcan Chico.

📍 Key Visitor Points

Los Tuneles (The Tunnels)

Considered by many as the best snorkeling site in the Galapagos.

• The Landscape: Arches and tunnels formed by lava flows into the ocean, creating calm, turquoise pools.
• Wildlife: Swim with Pacific Green Sea Turtles, Seahorses, White-tip Reef Sharks, and the iconic Galapagos Penguin.

Tintoreras Islet

A short boat ride from Puerto Villamil.

• What to see: A crevice where white-tip reef sharks (Tintoreras) rest in shallow, crystal-clear water. It is also a prime spot to see marine iguanas nesting and penguins.

The Wetlands & Wall of Tears (Muro de las Lagrimas)

A site that combines nature with history.

• History: A massive wall built by prisoners when Isabela was a penal colony (1945–1959).
• Wildlife: The path to the wall is the best place to spot wild Giant Tortoises and Darwin’s Finches in the lowlands.

Elizabeth Bay & Tagus Cove

Accessible only via cruise, these sites in the western part of the island are wild and remote.

• Tagus Cove: A historic site where pirates and whalers carved their names into the cliffs.
• Elizabeth Bay: A sanctuary for flightless cormorants and penguins, explored by zodiac (panga).

🐾 Wildlife Guide: The Big Five of Isabela

1. Galapagos Penguin: Isabela (and Fernandina) is the only place where you can find large colonies of these penguins.
2. Giant Tortoises: Isabela has five distinct subspecies, one for each major volcano.
3. Marine Iguanas: Some of the largest colonies in the archipelago reside here.
4. Flightless Cormorants: Found specifically in the nutrient-rich western waters of the island.
5. Blue-footed Boobies: Frequently seen diving and nesting along the rocky shores.

Galapagos Wildlife Calendar

📊 Quick Facts 

❓ Frequently Asked Questions (FAQ)

Can I visit Isabela without a cruise?

Yes! Isabela is one of the four inhabited islands. You can stay in Puerto Villamil and take daily tours to Los Tuneles, Tintoreras, and the Sierra Negra volcano.

How do I get from Santa Cruz to Isabela?

The most common way is by public speedboat (lancha), which takes about 2 to 2.5 hours. Alternatively, there are small inter-island planes (Emetebe or Fly Galapagos) for a 30-minute scenic flight.

Are there penguins in Isabela all year round?

Yes. Unlike other seasonal animals, Galapagos Penguins are year-round residents. They are most easily seen at Tintoreras or during a snorkeling tour to Los Tuneles.

Is the hike to Sierra Negra difficult?

It is a moderate hike of about 16 km (9.9 miles) round trip. The terrain is relatively flat but can be very hot and exposed. Good walking shoes and sun protection are mandatory.

🚢 Visiting Tips for Isabela

• Western Cruises: To see the truly remote parts like Tagus Cove or Fernandina’s border, you must book an expedition cruise.
• Land-Based: If you prefer staying on land, we recommend at least 3-4 nights in Isabela to fully appreciate its scale.

Visiting Isabela Island

A cruise is the best way to visit the Galapagos Islands, including Isabela. Live-aboard boats allow travelers to see as much of the archipelago as possible without going back and forth to your island base. However, if you prefer a land-based trip, Isabela is one of the few islands in the Galapagos where you can find accommodation options.