Ko Phi Phi (หมู่เกาะพีพี) is a small archipelago of six islands in Krabi Province, Southern Thailand. It is touted to be one of the most beautiful yet easily accessible island groups in the world. While the latter is certainly true, the former is quickly becoming less so. The entire region is technically part of a marine National Park, but the hordes of visitors have taken a toll on the beaches and reefs over the years.