The El Yunque National Forest is the only tropical rain forest in the national forest system. At nearly 29,000 acres, it is one of the smallest in size, yet one of the most biologically diverse of the national forests hosting hundreds of animal and plant species, some of which are found only here. (Source https://www.fs.usda.gov/elyunque/)
Puerto Rican Rain Forest Obliterated (Video)
http://www.cnn.com/videos/world/2017/10/29/el-yunque-national-forest-obliterated-martin-savidge.cnn