The structure and composition of Late Pleistocene ice wedges in the ice complex outcropping onto gently sloping Kular ridge in the western Yana-Indigirka Lowland are considered. Ice wedges are dated 47-42 and 37-32 kyr BP. Over this time, relatively high temperatures of the growing season were recorded twice. Their rise appeared to be suffi cient for the growth of trees, while a relatively warm summer season activated slope processes and accumulation of slope yedoma deposits.

Radiocarbon dating was performed at the Radiocarbon Laboratory of the Geological Institute of the Russian Academy of Sciences, with participation of Sulerzhitsky. Statistical parameters were derived from the data processing with the use of STATISTICA 10 software package. A series of dates were obtained for pure peat (with only few mineral inclusions), for wood from twigs, as well as for bone remains. All radiocarbon (¹⁴С) dates were calibrated using the OxCal calibration and analyst software, v. 4.3 (Bronk Ramsey, 2009), based on the IntCal13 calibration data set (Reimer et al., 2013).Data was submitted and proofread by Yurij K Vasil'chuk and Lyubov Bludushkina at the faculty of Geography, department of Geochemistry of Landscapes and Geography of Soils, Lomonosov Moscow State University.