It should have been a wonderful journey, organized by three dear friends who run a yoga center in Costa Rica. I would be traveling with my husband, these friends, and thirteen other like-minded folk to the Sacred Valley of the Incas in the Andes highlands of southern Peru. We’d be staying at a lovely retreat center just outside Pisac, an ancient market town encircled by imposing mountains. And our itinerary would take us to some of the most important Inca sites, including the iconic, hauntingly beautiful and remote Machu Picchu.