Sierra Negra (Black Mountain) is an active shield volcano on Isabella Island.
A shield volcano is named as such because it mimics a warriors shield laying on the ground. Unlike the thicker lava from the more conical stratovolcanoes, shield volcanoes spew out thinner, farther moving lava that builds up by depositing layer upon layer with each eruption. These types of volcanoes are typically found on islands and constitute the largest volcanoes on earth.
Sierra Negra is one of six volcanoes on Isabella and it sits about 13 miles (21km) to the north of Puerto Villamil. The volcano is typically accessed via a 9 mile (15km) hike. It’s not too strenuous, as the grade is relatively easy, but it can be hot and exposed. So, if you’re unprepared, it can be a tough day at the office.
Here are some highlights:
- Incredible animal sightings
- See steam vents & lava tubes
- Gorgeous views of the island & ocean
- One of the largest calderas in the world
- Walk through miles of hardened lava flows
- Wear sunscreen & a hat
- Wear adequate foot protection
- Binoculars will increase your chance of animal sightings
This is a must-see! You won’t regret it.