Dr Patrick L. Cooney of the New York Botany Organisation has listed fifteen species of trees, sixteen fern species, and over sixty species of herbs along the trails.[4] Exposed rocky outcrops along the rock faces are covered with mosses and lichens, and are considered to be fragile habitats. The area is also known for its population of timber rattlesnakes. These are large snakes some approaching 5 feet (1.5 m) in length.[5] They enjoy the shelter in the wooded areas but also enjoy basking in the sun on exposed rocks.