The Green Unknown is about walking, without a map or a plan, across the Khasi Hills in the Northeast Indian state of Meghalaya—a place of jungle canyons and thousand-foot waterfalls, where it rains more than any other inhabited place in the world, where each village has its own dialect or even its own language, and where the people grow living bridges from the roots of trees. The book is an attempt to express what it’s like trying to explore, mile by mile, village by village, valley by valley, a place that’s beautiful, complex, and fascinating, but most of all, unique.