The history of Sanjay Gandhi National Park dates back to the 4th century BC when the Kanheri Caves were carved out of the basalt rock. These caves served as Buddhist monasteries and learning centers for centuries. The area surrounding the caves was declared a national park in 1969 to protect the rich biodiversity and historical heritage. Over the years, the park has played a crucial role in conserving the region's natural resources and providing a green lung for the city of Mumbai. It has also become a popular destination for educational and recreational activities.