DHARTI DHORA RI
The accumulation of windblown sand marks the beginning of one of nature's most interesting and beautiful phenomena. Sand dunes occur throughout the world, from coastal and lakeshore plains to arid desert regions. In addition to the remarkable structure and patterns of sand dunes, they also provide habitats for a variety of life which is marvelously adapted to this unique environment.
Picturesque dunes against a sky of blue or a full moon, with perfectly contoured shadows of ripples and undulating crests, have always been a favorite subject of me. Dunes have also been the subject of many desert movies like laila manjnu ,lekin, meera ,mehbooba, to latast veer movie, and have historically been a formidable barrier to vehicular and rail travel. Depending upon one's particular situation, they can be one of the most incredibly beautiful, thrilling, eerie, treacherous or just plain inhospitable places on earth.
Origin of Sand Dunes
The origin of sand dunes is very complex, but there are three essential prerequisites:
1. An abundant supply of loose sand in a region generally devoid of vegetation
2. A wind energy source sufficient to move the sand grains
3. A topography whereby the sand particles lose their momentum and settle out. Any number of objects, such as shrubs, rocks or fence posts can obstruct the wind force causing sand to pile up in drifts and ultimately large dunes.
The direction and velocity of winds, and local supply of sand, result in a variety of dune shapes and sizes. The wind moves individual grains along the inclined windward surface until they reach the crest and cascade down the steep leeward side or "slip face," piling up at the base and slowly encroaching on new territory.
If the wind direction is fairly uniform over the years, the dunes gradually shift in the direction of the prevailing wind. Vegetation may stabilize a dune, thus preventing its movement with the prevailing wind.
THE DHARTI DHORA RI
THE LAND OF SAND DUNES
I wish to draw your kind attention toward the a beautiful song and poem over the land of golden sand dune were wrote by veteran poet mr kanhaiya lal ji sethia of sujan garh distt churu rajasthan
dharti dhoar ri Kanhaiyalal Sethia – Popular Rajasthani Poet who was Awarded Literary Geniuses of the 20th Century