This name refers to the shape of the mountain, which resembles an anvil.
It is used to describe:
* El Yunque National Forest: A rainforest located in the eastern part of Puerto Rico, known for its unique biodiversity and impressive mountain peak.
* The mountain itself: The highest peak in the forest, which is also called El Yunque.
So, "El Yunque" is a name that literally translates to "The Anvil" and signifies the mountain's distinctive shape.