“…Fialkov first described the study history of underwater canyons in Lake Baikal until the mid-1990s (Karabanov and Fialkov, 1987). Only surveying the bottom with multi-beam echosounders yielded more detailed data on canyons (Khlystov et al, 2018;Kononov et al, 2019a;2019b). Here, we study the factors that determine morphological features of the Baikal valleys with canyons and compare them with the morphology of the marine canyon valleys.…”