For vigorous-activity enthusiasts, a must is hiking in Babeldaob, Palau’s biggest island and the second-largest landmass in Micronesia. Measuring 27 miles/43 kilometers in length and 15 miles/24 kilometers across at its widest point, Babeldaob’s terrain transforms gracefully from steep mountains and forested hills or savannahs, to freshwater lakes to a paradise of sand along the longest natural beach in Palau. Blessed with these natural as well as historic wonders, ancient stone paths built in the jungle centuries ago lead to fascinating remnants of old villages and ancient hillside terraces.