Tilpat Valley Biodiversity Park

Tilpat Valley Biodiversity Park covers 172 acres of the South Delhi Ridge, north-west of the Asola Bhatti Wildlife Sanctuary and within the Northern Aravalli Leopard Wildlife Corridor. Sand-mining quarries and dried-up springs once marked these valleys, with only invasive weeds such as vilayati kikar, lantana and parthenium in place of natural forest. Development began in 2015, and the park was inaugurated on 3 February 2018 as Delhi's third biodiversity park.

Restoration replaced the invasive plants with layers of native trees, shrubs and grassland. In 2015, 40,000 volunteers planted more than 100,000 trees in six hours, and in 2016 volunteers planted 20,000 more. Today the park has grasslands and hilly ground and more than 105 species of tree and shrub, including mahua, haldu, sheesham and bael. A 2016 count recorded over 103 bird species, 32 butterfly species, 15 species of reptiles and amphibians and eight mammal species, including leopard and hyena.