We decided to visit the rain forest early on Monday morning thinking that there would be less of a crowd on the trails and at attractions. Parking - which we were told can be almost non-exsistent during busy seasons and on week-ends - was easy before midday, but the attractions, visitor centers, and trails became busy by noon.
The trails throughout the rain forest are generally well-marked. The Big Tree Trail has many informational plaques describing the history and ecological importance of the trees and plants along the way to the trail's main attraction: La Mina Falls. Here dozens of people enjoy swimming as well as relaxing on the rocks. If you're not into crowds, you might want to skip the falls, but the trail offers an opportunity to learn much about some of the trees and flora native to Puerto Rico.
Be prepared for sudden rain showers and wet trails. Although hiking boots are not necessary, I recommend shoes with good tread for safe hiking because the trails are either muddy, cobbled or rocky. The hike to the top of El Yunque (elevation 3,533 feet) takes about three hours round-trip. There are, however, shorter trails leading to other points of interest such as Mt. Britton and El Toro. Mt. Britton has an architecturally interesting castle-like tower at trail's end that affords a panoramic view of the rain forest and the ocean beyond. Surprisingly, El Yunque's summit boasts only a huge radio tower, a caretaker's quarters and an abandoned-looking building that serves as a viewing post. Unfortunately, we were not inspired to linger and enjoy the views.
There is an intriguing variety of ferns, palms and other plants. However, the absence of animal life (not even a glimpse) was surprising, if not disappointing. An occasional bird-call and the amusing coqui frog whistle-like shrill is the sum of our exposure to the fauna of Puerto Rico.