What is "malkh"

The Malkh were an ancient nation, living in the Western/Central North Caucasus. They are usually regarded as the westernmost Nakh people, and their name has a Nakh root (Malkh, the sun, attached to the main God, Deela's name as well, see Vainakh mythology). Their name may have actually been something closer to "Melkhi", but the common (via Chechen perhaps) rendering is "Malkh". Little is known about them due to a loss of historical writings.