Sierra Negra, one of the most active volcanoes on Isabela Island, rises to an elevation of 4,400 feet with a caldera stretching 6-miles long in diameter, making it the second-largest crater on earth. The massive caldera offers the perfect setting for hiking on this beautiful volcanic terrain. As you begin the trek up to the summit, make your way through fern-covered vegetation and listen to the beautiful songs of Darwin’s finches. At the top of the caldera, enjoy the scenic landscape that surrounds this impressive volcano.