About 70% of the state is forested, of which 9,496 km2 (3,666 sq mi) is dense primary subtropical forest.[12] The Meghalayan forests are considered to be among the richest botanical habitats of Asia. These forests receive abundant rainfall and support a vast variety of floral and faunal biodiversity. A small portion of the forest area in Meghalaya is under what are known as "sacred groves" (see Sacred groves of India). These are small pockets of an ancient forest that have been preserved by the communities for hundreds of years due to religious and cultural beliefs. These forests are reserved for religious rituals and generally remain protected from any exploitation. These sacred groves harbour many rare plant and animal species.