<P> The Thar Desert, often called an' ocean of sand', covers a large area of western Rajasthan . The fragile ecosystem of the Thar supports a unique and varied wildlife . In this vast ocean of sands lies the famous Desert National Park, which provides an excellent example of the ecosystem of the Thar Desert and its diverse wildlife adventure . </P> <P> The vegetation is sparse, and patches of sewan grass and aak shrub (Calotropis) can be seen . The landscape includes craggy rocks and compact salt lake bottoms, as well as intermediate areas and both fixed and shifting dunes . Around 20 percent of the vast expanse is covered with sand dunes . </P> <P> Flora: ronj, palm trees, ber, dhok . </P> <P> Mammals: desert fox, Bengal fox, desert cat, wolf, hedgehog, blackbuck and chinkara . </P>

What species of plant can be found in the great thar desert