From volcano to rainforest

This is volcanic rock from El Yunque Rain Forest, Puerto Rico... my backyard, literally. The road leading up to this tropical rain forest winds around an dormant volcano. In fact, if it wasn't for this volcano, there would be no rain forest nor Puerto Rico. The volcanic ash and the lava that once flowed out thousands and thousands of years ago all provided the perfect atmosphere and conditions to create this lush forest. Around every turn there are waterfalls, birds calling, a thick canopy of leaves providing relief from the heat, the smells, the sounds...even 30 years later, I can remember it like yesterday. One of many trips up the volcano, I remember taking some lunch and a few beers up. We found one of the waterfalls off the beaten path. We put our picnic in a plastic bag, waded through the pool, and went behind the falls. There was a cave with plenty of room for five of us to enjoy our little private oasis. I'm not sure if this is allowed today but it's a memory that has always stuck in my head.