One of the youngest islands, Isabela is located on the western edge of the archipelago near the Galapagos Hot Spot. At approximately 1 million years old, the island was formed by the merger of 6 shield volcanoes - Alcedo, Cerro Azul, Darwin, Ecuador, Sierra Negra and Wolf. All of these volcanoes except Ecuador are still active making it one of the most volcanically active places on earth. Shaped like a sea horse, it is the largest of the the islands in the Galapagos, more than 4 times larger than Santa Cruz the next largest. Isabela is 80 miles in length. This picture was taken from our ship archored in the Bolivar channel near Tagus Cove.