Sustainable Travel · Ecuador · Galápagos
Eco-Friendly Hotels on Isabela Island, Galápagos — Your 2026 Guide
Isabela Island is the largest in the Galápagos Archipelago — bigger than all the other islands combined — yet it remains the least visited of the inhabited islands. Its main town, Puerto Villamil, is a village of a few thousand residents where penguins and sea lions share the beach with the locals, and the pace of life is set by fishing boats rather than tourist logistics. Five active shield volcanoes dominate the interior, including Sierra Negra with the second-largest volcanic caldera in the world. Isabela is the only place on earth where Galápagos penguins nest on the same shoreline as flightless cormorants — two species found nowhere else on the planet. Giant tortoises roam the southern highlands in the thousands. For anyone who has done Santa Cruz and wants the real, unpolished Galápagos experience, Isabela is the next destination. When you book through IMPT, every night removes 1 tonne of verified CO₂ — helping stabilise the ocean temperatures that Galápagos penguins and coral depend on.
Isabela's Extraordinary Wildlife — Species Found Nowhere Else
The Galápagos Islands are the only place where six species of exclusively endemic land birds evolved in isolation: Galápagos penguins, flightless cormorants, Galápagos hawks, Galápagos doves, Galápagos rails, and the Galápagos Martin. On Isabela, four of these are easily observable. The penguin and flightless cormorant combination at Los Túneles and Punta Moreno is unique: these two species evolved in the same cold Humboldt Current upwelling, and their colonies overlap at several points along Isabela's western coast.
The Galápagos penguin is the northernmost penguin species on earth — the only one that regularly crosses the equator. Isabela's population of roughly 1,500 birds (the majority of the global population of around 2,000) depends on the Cromwell Current upwelling that brings cold, fish-rich water to the western Galápagos. When El Niño events warm the ocean surface, the upwelling fails and penguin breeding collapses — a direct connection between climate and species survival. IMPT's carbon removal supports the broader effort to stabilise global temperatures and protect ecosystems like this one.
Isabela's six giant tortoise subspecies — distributed across different volcanic slopes like Darwin (Cerro Azul), Alcedo, Sierra Negra, Santo Tomás, Wolf, and Darwin — represent the highest concentration of tortoise diversity on any single island. The Alcedo Volcano tortoise population of roughly 5,000 individuals is the largest of any Galápagos subspecies. Wild tortoises are accessible through guided hikes on the island's southern slopes, and the Centro de Crianza tortoise breeding station in Puerto Villamil can be visited on foot from town.
Isabela has small eco-lodges and guesthouses in Puerto Villamil — a genuine off-the-beaten-track Galápagos experience. IMPT books them at standard rates with 1 tonne CO₂ retired per night. Search Isabela hotels →
Sierra Negra Volcano, Los Túneles, and Puerto Villamil
Sierra Negra Volcano Hike
Sierra Negra, at 1,124 metres, has the second-largest volcanic caldera in the world at 9.3 kilometres in diameter. The guided hike from the trailhead (accessible by taxi from Puerto Villamil) takes 2–3 hours to the rim and rewards with a view across the vast, flat-floored caldera — still steaming and glowing red at night during active periods. Sierra Negra last erupted in 2022. The extension trail to the Chico lava fields leads through surreal formations of twisted pahoehoe lava, spatter cones, and former lava rivers. Guides are mandatory; tours leave Puerto Villamil daily.
Los Túneles (Cabo Rosa) Snorkelling
Los Túneles is a marine lava formation offshore from Puerto Villamil where volcanic rock arches and tunnels create a labyrinthine snorkelling circuit. This is where Galápagos penguins and sea horses share the same snorkel site — one of the more improbable wildlife combinations on the planet. White-tipped reef sharks rest in the tunnels. Marine iguanas dive for algae. Eagle rays glide beneath the arches. The site is accessible only by boat (45 minutes from Puerto Villamil) and tours depart in the morning. The afternoon return is often rough; most operators leave by 1 PM.
Puerto Villamil — The Most Relaxed Town in the Galápagos
Puerto Villamil's 2-kilometre beach is shared democratically between human bathers, sea lions, marine iguanas, and Galápagos penguins. The flamingo lagoon behind the town hosts a resident flock visible from the path along the lagoon edge. The village square has a handful of restaurants and small hotels. The town's tortoise breeding centre — Centro de Crianza Arnaldo Tupiza Chamaidan — breeds juvenile Galápagos tortoises for reintroduction to volcanic slopes cleared of invasive species and is freely visitable. Puerto Villamil has a fraction of Santa Cruz's tourism infrastructure, which is precisely its appeal.
How IMPT Makes Your Galápagos Stay Carbon-Negative
An average hotel night produces roughly 35 kg of CO₂. When you book any Isabela Island hotel through IMPT, we retire 1,000 kg of UN-verified carbon removal credits — 28 times your stay's footprint. Not carbon-neutral — carbon-negative. The removal is funded from IMPT's booking commission at no cost to you. Credits are tokenised on Ethereum with a public retire code, permanently auditable. Climate stability is existential for Galápagos wildlife: ocean warming from El Niño events has crashed penguin breeding rates; every tonne removed helps.
- €5 free credit when you sign up — applied to your first Galápagos booking
- 5% back on every stay — 3% to carbon projects, 2% as travel credit
- 8M+ hotels worldwide, 195 countries
- Free cancellation on most rates, typically up to 48 hours before check-in
Frequently Asked Questions — Isabela Island Eco Hotels
Is Isabela Island better than Santa Cruz for the Galápagos?
They offer different experiences. Santa Cruz is the logistical hub — more hotels, easier connections, the Darwin Research Station. Isabela is less developed, quieter, and has wildlife found nowhere else: flightless cormorants, Galápagos penguins nesting on the same beach, and the world's largest Galápagos tortoise population. Isabela is better for fewer tourists, a more remote atmosphere, and the island's extraordinary volcanic landscapes. Most visitors combine both.
How do you get to Isabela Island?
A public ferry from Santa Cruz (Puerto Ayora) to Isabela (Puerto Villamil) runs daily, departing at 7 AM and taking approximately 2 hours. Return ferries leave Isabela at 3 PM. Private speedboats are available but more expensive. There are no direct mainland flights to Isabela — connect via Santa Cruz (Baltra) or San Cristóbal first.
What makes Isabela Island unique in the Galápagos?
Isabela is the largest island — bigger than all others combined — with five active volcanoes including Sierra Negra (second-largest caldera in the world at 9.3km diameter). It hosts six distinct giant tortoise subspecies and is the only place on earth where Galápagos penguins and flightless cormorants nest on the same shoreline. Whale sharks aggregate at Wolf and Darwin islands at the northern tip seasonally.
Can you hike the volcanoes on Isabela?
Yes. Sierra Negra volcano rim hike takes 2–3 hours from the trailhead and rewards with panoramic views over the 9.3km caldera. The Chico lava fields extension passes surreal volcanic formations. Sierra Negra last erupted in 2022 but the rim hike is operated safely when conditions allow. Guides are mandatory per National Park rules. Tours depart daily from Puerto Villamil.
Are there more tourists on Isabela or Santa Cruz?
Santa Cruz receives significantly more visitors — it's the main hub with more infrastructure. Isabela has far fewer tourists, a relaxed village atmosphere, and the main beach in Puerto Villamil often has penguins, sea lions, and marine iguanas sharing sand with a handful of visitors. If avoiding crowds while seeing extraordinary wildlife is a priority, Isabela is the better choice.
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