When you consider the great expeditions in the annals of mankind, such as Robert Peary’s quest for the North Pole, David Livingstone’s five-year search for the Nile River’s source and Henry Stanley’s subsequent search for Livingstone — well, my pursuit of Butterfly Lake might seem a tad bit insignificant. However, finding the North Pole or the Nile’s source would have been easier. Having hiked in the Tahkenitch Dunes area north of Reedsport many times, my initial quest was simply to change up the usual route for a little variety. As I perused a map of the area, Butterfly Lake came …