Head off the beaten path for a look into Phuket's geological past. Once covered in rain forest, Khao Phra Thaeo National Park is the only virgin, untouched rain forest left on the island. When you arrive, a knowledgeable guide and a park ranger will lead you on an approximately two-hour hike on a jungle trail. As you ramble through the forest of mahogany, evergreen, ficus and bamboo, you may see some local residents-tropical birds, deer, and flying foxes and you may hear the "whoop" call of a gibbon. Graceful streams gently cascade from the hillside and several rivers feed the jungle's rich ecosystem with fresh clean water and you may witness some wildlife stopping for a quick drink at the tranquil Nam Tok Tone Sai waterfall. At the conclusion of the hike, you'll stop and shop for souvenirs and local handicrafts en route to the ship.