This morning we woke up at San Cristobal Island, the oldest island in the archipelago. The tuff formation is amazing to view, and the effects of the erosion by the wind make this mountain an incredible landscape. We observed the striking olivine sediments that make up the beach, and spotted many blue-footed boobies nesting on the ground, as well as red-footed boobies nesting on the nolana vegetation. The landscape is breathtaking and the walk was invigorating.