The distinct Rann of Kutchch–Bhuj in Gujarat forms a separate zone with in Thar deserts due to its different climatic conditions. It represents vast saline flats. The region of sand dunes is most spectacular and covers an area of 100,000 sq. km nearly. It extends into Pakistan. The dunes are highly sandy and contain 0.12–0.18 mm size grain, 1.8 to 4.5 % of clay and 0.4–1.3% of silt.

• Since heat and light intensity are very high and sand dunes are shifting, these deserts can not support vegetation. There are only some thorn forests and dry open grasslands. Indira Gandhi canal which carries water through Punjab and Haryana enters into Rajasthan supports some vegetation. The main crops of desert are bajra, millet, wheat, barley, maize, jowar, guwar. Medicinal plants found here are mehndi, hak, isabgole and gugal.
• Indian deserts support many threatened species of birds and mammals, such as Asiatic lion, wild ass, bats, scaly ant eater, desert fox, Indian gazzel, four horned antelope , white browed Bushchat, Great Indian Bustard, Cranes and Sandgrouse. Gulf of Kuchch is distinguished by the presence of living corals, pearl oyster, sea turtles and a large number of migratory birds like kingfisher, cranes ibis and herons.