The park is known for its hiking and scenery, especially in the fall when the leaves begin to change colors.There are also many species of wildlife that live within the park including the black bear, fox, woodchuck, deer, and squirrels.The New Jersey Division of Fish and Wildlife stock the Black River with Brown, Rainbow, and Brook Trout regularly.Throughout the park there are also many endangered plants including the American ginseng, leatherwood, and Virginia pennywort.[3] The weather for the park can vary slightly depending on the year, but its climate is similar.Fall weather begins around mid-September and will last until November during this time temperatures range from 45–65 °F (7–18 °C).[4] The land where Hacklebarney is now located was originally inhabited by many Native American tribes.These included the park being used for picnic tables, family vacations, and a forest demonstration area.The parks division was influenced by people's newfound love of the road and the growing of the Girl Scouts of the USA and the Boy Scouts of America and their need for open spaces to conduct their outdoor activities.Although the CCC's work is still the biggest conservation project ever completed in the park, some of the additions are no longer used, such as the original water system.