Hike the rim of Sierra Negra on Isabela Island — a 16 km trek across lava fields to one of the Galápagos’ largest active calderas. This half-day guided excursion combines volcanic geology, endemic plants, and sweeping crater views with hotel pickup and a box lunch.
More ways to explore the area's outdoor wonders
You step out of the minivan into a wind that tastes of sea and iron; the caldera rim of Sierra Negra looms ahead, a wide crater that seems to breathe. The trail unfurls across hardened lava flows and compacted volcanic ash as the guide points out fissures and recent pahoehoe formations. The landscape feels alive — the ground pushes you forward, and the wind tests your balance along the rim.
Difficulty
moderate
Duration
6–7 hours
Fitness Level
Moderate fitness—comfortable walking 16 km with some uphill sections and uneven terrain; habitual walkers or light hikers should be fine.
Wildlife
History
Isabela Island’s volcanic activity shaped settlement patterns; 19th-century visitors documented flora and fauna that later informed Darwin’s ideas about evolution.
Conservation
Remain on marked trails to protect fragile pioneer vegetation; the Galápagos National Park restricts access to limit erosion and invasive species introduction.
Reserve your spot on the Galapagos Hiking excursion to Sierra Negra Volcano & Lava Fields today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Hydrate for exposure
Carry 2–3 liters of water and sip often — there’s little shade across the lava fields and dehydration comes quickly.
Wear sturdy footwear
Trail is uneven with sharp lava and loose scree; ankle-supporting hiking boots reduce risk of twists and cuts.
Protect from sun and wind
High UV and reflective black rock amplify sun exposure—use sunscreen, a wide-brim hat, and a windproof layer.
Pace for altitude and distance
Keep a steady pace, take short breaks, and follow your guide’s instructions on narrow rim sections and unstable lava surfaces.
Hiking boots
Support and protection for sharp, uneven lava and scree.
Hydration reservoir or water bottles (2–3 L)
Necessary to prevent dehydration on exposed sections of the route.
Sun protection (hat, SPF 30+ sunscreen, sunglasses)
UV is intense near the equator and reflected off dark rock.
summer
Windproof jacket or light layers
Wind from the ocean can be cool at the crater rim, especially in early morning.
spring