Dailong village is home to the rare and endangered citrus indica or the Indian wild orange. The Indian wild orange is the most primitive ancestor to all cultivated citrus fruits in the world. A total area of 11.35 sq.km has been declared as a Biodiversity Heritage Site. Home to the Rongmei Nagas, Dailong village is one of the oldest villages in Tamenglong district. For many generations, the villagers have been the sole protectors of sacred groves called 'Raengan'. These protected forests are home to many endemic and rare plant species.