The Google Map shows the distribution of the Udi, an ancient relict ethnos of the Caucasus, the survivors of the formerly great Caucasian Albanian people.
Today, this Christian people is found primarily in two large villages in Azerbaijan (Nic and Oğuz, known until 1991 as Vartashen) and one small settlement in Georgia (Zinobiani). There are smaller numbers of Udi in a few other villages in Azerbaijan (and of course in its capital Baku) but most have assimilated or left the country for Armenia and, more especially, Russia. Most of the settlements in Azerbaijan marked with blue pins on the map therefore effectively show former rather than extant Udi communities.
As mentioned, there are numbers of Udi in diaspora dispersed across both cities and villages in southern Russia (shown with grey pins on the map) and elsewhere across Russia (not marked on the map).
Finally, there are also about 200 Udi refugees from Oğuz in a handful of villages in Armenia; these are marked with red pins.