Aarey Forest or Aarey Milk Colony is a rich urban forest which is within the eco sensitive zone of Sanjay Gandhi National Park (SGNP). It is classified as mixed moist deciduous type forest. It acts as a buffer between SGNP and the city, being one of the few green spaces (spread over 2000 acres) left in Mumbai. On 3 September 2020, the Maharashtra government declared one fifth of the Aarey Colony, an area of approximately 600 acres, as a reserved forest.