KARST AND PSEUDO-KARST LANDSCAPES IN THE HEADWATERS OF THE OKA AND DON RIVERS ON THE CENTRAL RUSSIAN UPLAND
The article presents original materials on karst and pseudo-karst landscapes collected by the authors for 60 years. Particular attention is paid to the dynamics of karst and pseudo-karst complexes, confined to vertical mesozones in the centre of the Russian Plain to the south of the latitudinal flow of the Oka River.