Question

what are dunes name some well known dunes

Answer 1

a Dune is amount of sand formed by wind usually A Long Beach or in desert ..
dunes are formed when la wind blows sand into a sheltered area behind any obstacles .Dunes grow as grains of sand accumulate. every Dune has windward and side and slipface .

for example keslo Dune Bamburg Dunne winterton Dune sandDume etc

Answer 2

hey mate here's your answer -

Dunes is a hill of loose sand built by aeolian process or the flow of water.
Ex - Great dune of pyla
Simpson desert of dunes
Badain jardan of deserts

hope it helps !!