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The paper reviews challenges associated with designing of equipment required to implement the selected technology of penetration into Subglacial Lake Vostok in Antarctica. It describes the design process of inertial mechanical reamer, which is required for one of the stages of the proposed penetration technology. The initial design of the reamer was developed, manufactured and tested in Borehole 5G during the seasonal shift period of the 62nd Russian Antarctic Expedition (December 2016 -Januarydoi:10.1088/1755-1315/378/1/012006 fatcat:nex4uq7nqnhgrfkrjgixmwsibe