Wikipedia
Attan is a form of dance that originated in the Pashtun regions of eastern Afghanistan. Attan began as a folk dance conducted by Pashtuns in times of war or during weddings or other celebrations (engagements, new year, and informal gatherings). It is now considered the national dance of Afghanistan.
The performance of attan dance in the open air has long been customary in the Pashtun culture. Attan is a special type of dance performed by a troupe of 50 to 100 dancers who wave red scarves in the air while musicians beat drums. This dance is common among the Pashtuns of Afghanistan and Pakistan and the ruling elite promoted it as the national dance of Afghanistan. It is also performed as a regional dance in khyber Pakhtunkhwa and Federally Administered Tribal Areas region of Pakistan