PITON TREK Take the ultimate St. Lucian challenge and climb to the peak of the world-famous Gros Piton, designated a World Heritage Site by UNESCO and described by Oprah as one of the four places you must see during your life.      Your day begins with a trip by boat down the west coast, taking in the sights of Marigot Bay and Anse Cochon, before disembarking at Anse la Voine, at the base of the mountain. Your Guide will then accompany you to the summit, from which the view has to be seen to be believed, with clear views across to Martinique to the north and St. Vincent to the south.      Please note that while the climb does not require special experience or equipment it is nonetheless strenuous and not suitable for all. Hiking boots or sturdy trainers are required, and long sleeves and insect repellant are recommended. US$145 per person. Price is per person, including transfers, admission fee, bottled water during the climb and lunch on the beach afterwards.