Isabela, Ecuador Caminata

The Sierra Negra volcano is one of five volcanos on the island of Isabela, and boasts the second largest volcanic caldera in the world- On the Sierra Negra Volcano Tour you hike to the rim of the six mile wide crater and then trek across an alien landscape of lava fields and fumaroles. The Sierra Negra is one of the most active volcanoes in the Galapagos, with the last eruption in 2005. Though you probably won't see any lava flowing, you will have the opportunity to explore thermal vents and other fascinating geologic features before stopping for a snack near Volcan Chico. The vistas from this spot are among the most breathtaking in Isabela.