Garmsiri is a continuum of closely related dialects extending from the Halilrud river valley in the north down to the Strait of Hormuz in the south.

[2] Jiroft lies in an alluvial plain of the Halil River, on the southern outskirts of the Jebal Barez mountain chain.

It sits in a tectonically active basin,[8] at the northern end of the Bandar Abbas-Jiroft fault zone, with both structural and anthropogenic subsidence occurring.

It has been operational since 1992, With a reservoir of more than 410 million cubic meters of water it irrigates 14,200 hectares of land downstream and generates electricity.

For example, one grave contained "animal bones and food offerings, ceramics, and stone and copper items ... [indicating] a coherent cultural and chronological framework, around 2400–2200 BC".

A 2013 research paper about the South mound states that work during 2006 to 2009 "revealed the remains of three successive settlements dating to the fourth millennium BC".

Excavation re-commenced in 2014 and revealed art works of "complexity and beauty" and artifacts that proved that the society had several writing systems.