marsh in wooded areaFor High Country News, Natalia Mesa takes us on a tour of some of the West’s wetlands, whose ecological importance is belied by the fact that many are not only understudied — they are unmapped. She profiles new research on the Hoh Rainforest’s wetlands, which are hidden by tree canopy and are often far from any trail or road, and discusses the political and ecological dangers facing these critical habitats and carbon sinks. Photo: Olympic National Park