Extended trekking on the island of Isabela in the remote Galapagos archipelago is a rare privilege and we are one of only a few operators allowed here. As part of this trip we enjoy two days trekking on the Sierra Negra Volcano, going to the 11km wide crater rim, a hike blessed with striking views of the lava-strewn landscape and its smouldering fumaroles. As well as five major volcanoes, Isabela is also one of the last remaining habitats of the Galapagos giant tortoise. Elsewhere in the Galapagos we undertake shorter walks to appreciate the geological features of these enchanting islands and discover their endemic wildlife.