San Cristobal Island is the second oldest island in the archipelago. That is the reason some plants and animals found here are endemic to only to this island. One side has one of the driest places in Galapagos with its own flora and fauna, while the other side is one of the wettest areas in Galapagos. It features the only freshwater lake in this group of Islands and has its own flora and fauna. It is amazing to explore this oceanic archipelago aboard National Geographic Islander II.