On our last full day in the Galapagos, we enjoyed spending time at Santa Fe and San Cristobal Islands. The islands are two of the oldest in the Galapagos, as they sit in the eastern part of the archipelago. All the islands resulted from the activity of a stationary, volcano-producing area in the northwest part of the islands. As extinct volcanos, Santa Fe and San Cristobal Islands are now exposed to the elements. Little by little, they will deteriorate until they return to the ocean.