Photo credit: USDA Forest Service

El Yunque National Forest is the only tropical forest in the National Forest System of the United States. Covering 29,000 acres, El Yunque stretches over eight municipalities in the Sierra de Luquillo Mountains in northeastern Puerto Rico. It is the only national forest that is designated entirely as an experimental forest (Luquillo Experimental Forest) and the only forest located on an island. Not only it rains more than any other national forest, it has the highest plant biodiversity of all national forests, with more than 800 plant species (225 native tree species). Over 130 vertebrate species occur in the forest, along with 11 orders of insects. El Yunque has beautiful scenery of steep mountains that rise from sea level, lush tropical vegetation, rivers, waterfalls, historical properties and stunning plant and wildlife biodiversity. This vast diversity is reflected in the 15 forest types have been recognized at El Yunque, each one with particular environmental conditions. Visitors can enjoy hiking, swimming in the rivers or driving on the PR 186 Scenic Byway, which leads to El Toro trail in the Wilderness Area. This trail leads to the top of El Toro peak, the highest mountain in the forest. From the top of the mountains in the spectacular elfin forest, to the rivers and streams that cross the forest and to the large Palo Colorados and Tabonucos, El Yunque is a spectacular rain forest full of life.

https://www.fs.usda.gov/elyunque/