The Luristan Communities were living in and around the Zagros Mountains between Iran and Iraq in the late 2nd and early 1st millennia bc, distinctive for their bronze-working industry. Their origins are obscure, but they may have originated in the Caucasus away to the east; they seem to have been ancestral to the Medes and Persians. Their bronze work is characterized by ornamentation that includes the free use of animal and demonic human forms applied to such products as weapons, horse fittings, and jewellery.