The article is devoted to the study of the features of the soil cultural layers of the settlement monuments of the developed late Bronze Age of the XIX–XVII centuries. BC. (1930–1750 BC, 1890–1740 BC, 2830–2820 BC, 1875–1840 BC, 1820–1795 BC, 1780–1685 BC, 1670–1665 BC (Beta Analytic – 347344, 347343, 352489, 395800) of the Southern Urals after the population's withdrawal. Monuments are monogenetic, located in the middle reaches of the river Urshak, with its tributary the Belyi Kluch River, created by the population of Srubnaya and Alakul cultural communities. The cultural layers are exposed, that is, the duration of the processes of soil formation and transformation is more than 3,5 thousand years.