Charles Darwin provides excerpts from his journal during the Voyage of the Beagle. Over multiple entries spanning years, he describes the geography, geology, and wildlife of locations in South America, including Cape Verde, Rio de Janeiro, the Falkland Islands, Tierra del Fuego, Chile, and Argentina. He finds many fossils of extinct giant mammals embedded along the coasts, indicating the areas were changed by uplift and erosion over long periods. Darwin provides detailed observations of the landscapes and environments in brief journal entries from his historic voyage.