The region stretches over the communes of Vex and Hérémence, its two main villages. ("Commune" is a Swiss term referring to the land surrounding, and administered by, a village or town.) The two communes in our region are, by Swiss standards, vast, running from the Rhone Valley, at 600 meters above sea level, up to the glaciers feeding the Grand Dixence Dam, and then all the way up to the summit of the icy, towering Mt Blanc du Cheilon, at 3870 meters above sea level. That's more than 3 kilometers (2 miles) higher! Needless to say, this allows for an enviable level of bio-diversity in this area: those who wish to can check out the flora, fauna and geology typical of the Mediterranean and of the Arctic Circle -- all in the same day, and all within Thyon-Région.