Scientists carried out a study of the bottom using remotely controlled uninhabited underwater vehicles (ROVs). These are robots equipped with a camera for video and photography, as well as an underwater hydroacoustic navigation system. According to Oksana Lunina, a researcher at the Institute of Culture SB RAS, Doctor of Geological and Mineralogical Sciences, it was proposed to look at several places under water opposite the Severobaikalsky fault. “That’s where we discovered mud volcanoes, although we expected to see only cracks. Typically, the bottom of Lake Baikal near the shore is composed of boulder-pebble material, and deeper – silt deposits. Here, porous clays were discovered that differed from the usual bottom,” Lunina noted.