sandstorm
A hill of sand in a desert is normally referred to as a dune
A Sand Dune, more specifically a "Seif Dune" or a "Barchan Dune".
Sandstone is made of compressed particles of silica, the mineral that makes up sand. When sand is piled on top itself over time, with a considerable amount of weight, this sedimentary rock is formed.
To do this you will would normally use a large wire filter where holes are set at about the size of sand. By vibrating this net area it sifts out the sand leaving rocks in the netting - It can be undertaken by multiple operations where holes in the netting become smaller so filtering page to small grains/rock. A crude method is using a rake to drag away large rocks from sand
Sand/Dirt, sand dwelling creatures and cactiA hint: Don't drink the water from the cacti; most cacti's water is poisonousyou would find sand, rocks, and some reptiles.
Sand that is piled up because of the wind and/or waves is called a dune.
small hill of sand caused by the action of wind
a sand dune
Sandbars and sand dunes are both sand piled on top of sand by the pressure of currents. Sandbars are accomplished by the action of water currents (waves). Sand dunes by air currents (wind).
a sand dune
Sand dunes
Both are created by wind moving the sand. In the case of desert pavement, the wind removes the fine sand, leaving only pebbles and rocks. In the case of dunes the sand is piled as a dune by the action. of wind.
Sand Dunes
sand drifts or sand dunes
A hill of sand in a desert is normally referred to as a dune
A sand dune
A Sand Dune, more specifically a "Seif Dune" or a "Barchan Dune".