IN A WORLD WHERE IT CAN FEEL INCREASINGLY hard to escape and go off the grid, Mukan Resort, south of Tulum, is where the search ends. Tucked securely into the Sian Ka’an Biosphere Reserve, a UNESCO World Heritage Site, Mukan is a small, luxurious-but-natural resort on a narrow strip of land surrounded by untouched forests to the north and south and bordered by the Caribbean Sea to the east and the San Felipe Lagoon to the west.