<Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> The geographic features of Rajasthan are the Thar Desert and the Aravalli Range, which runs through the state from southwest to northeast, almost from one end to the other, for more than 850 kilometres (530 mi). Mount Abu lies at the southwestern end of the range, separated from the main ranges by the West Banas River, although a series of broken ridges continues into Haryana in the direction of Delhi where it can be seen as outcrops in the form of the Raisina Hill and the ridges farther north . About three - fifths of Rajasthan lies northwest of the Aravallis, leaving two - fifths on the east and south direction . </P> <P> The northwestern portion of Rajasthan is generally sandy and dry . Most of this region is covered by the Thar Desert which extends into adjoining portions of Pakistan . The Aravalli Range does not intercept the moisture - giving southwest monsoon winds off the Arabian Sea, as it lies in a direction parallel to that of the coming monsoon winds, leaving the northwestern region in a rain shadow . The Thar Desert is thinly populated; the town of Jodhpur is the largest city in the desert and known as the gateway of thar desert . The desert has some major districts like Jodhpur, Jaisalmer, Barmer, Bikaner and Nagour . This area is also important defence point of view . Jodhpur airbase is Indias largest airbase and military, BSF bases are also situated here . A single civil airport is also situated in Jodhpur . The Northwestern thorn scrub forests lie in a band around the Thar Desert, between the desert and the Aravallis . This region receives less than 400 mm of rain in an average year . Temperatures can sometimes exceed 54 ° C in the summer months or 129 degrees Fahrenheit and drop below freezing in the winter . The Godwar, Marwar, and Shekhawati regions lie in the thorn scrub forest zone, along with the city of Jodhpur . The Luni River and its tributaries are the major river system of Godwar and Marwar regions, draining the western slopes of the Aravallis and emptying southwest into the great Rann of Kutch wetland in neighbouring Gujarat . This river is saline in the lower reaches and remains potable only up to Balotara in Barmer district . The Ghaggar River, which originates in Haryana, is an intermittent stream that disappears into the sands of the Thar Desert in the northern corner of the state and is seen as a remnant of the primitive Sarasvati river . </P> <P> The Aravalli Range and the lands to the east and southeast of the range are generally more fertile and better watered . This region is home to the Kathiawar - Gir dry deciduous forests ecoregion, with tropical dry broadleaf forests that include teak, Acacia, and other trees . The hilly Vagad region, home to the cities of Dungarpur and Banswara lies in southernmost Rajasthan, on the border with Gujarat and Madhya Pradesh . With the exception of Mount Abu, Vagad is the wettest region in Rajasthan, and the most heavily forested . North of Vagad lies the Mewar region, home to the cities of Udaipur and Chittaurgarh . The Hadoti region lies to the southeast, on the border with Madhya Pradesh . North of Hadoti and Mewar lies the Dhundhar region, home to the state capital of Jaipur . Mewat, the easternmost region of Rajasthan, borders Haryana and Uttar Pradesh . Eastern and southeastern Rajasthan is drained by the Banas and Chambal rivers, tributaries of the Ganges . </P>

Which districts of rajasthan are situated on pakistan border
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