El Yunque National Forest The Caribbean National Forest is the sole tropical rain forest in the U.S. National Forest System. The forest’s relatively small 28, 000 acre size belies its importance. It differs significantly from all the other U.S. National Forests because of its year-round tropical climate and immense biodiversity. Creado en Thu, Sep 29 2005. Actualizado en Fri, May 4 2007.
