Thar Desert of sand in the desert are interspersed by hillocks and sandy and gravel plains. Due to the diversified habitat and ecosystem, the vegetation, human culture and animal life in this arid region is very rich in contrast to the other deserts of the world. About 23 species of lizard and 25 species of snakes are found here and several of them are endemic to the region. Some wildlife species, which are fast vanishing in other parts of India, are found in the desert in large numbers such as the blackbuck ("Antilope cervicapra"), chinkara ("Gazella bennettii") and Indian wild ass ("Equus
Thar Link Express renewable rail communication agreement was again extended by both nations from 19 January 2016 to 18 January 2019. This agreement forms the basis of running Thar Link Express, as well as the Samjhauta Express. The Delhi–Lahore Bus and Srinagar-Muzaffarabad Bus are based on a separated agreement. The Thar Link Express is a continuation of the previous "Sind Mail", when it was revived after a period of 41 years on 18 February 2006. Indian network, on which this train runs, was converted to broad gauge long ago. In 2005, Pakistan also converted the line from metre gauge to broad gauge. This