12/9-14

Position: 87 19.0' N, 159 21' E, temperature - 10 C, air pressure 1007 hPa, wind 5 knots from SSW. Completed the long ice wall and three layers on the front wall. The 3.5 kHz signal weakened and "disappeared" about midnight and came in strong about noon. We must have passed a basement peak protruding out of the Makarov abyssal plan - a feature not shown on the IBCAO map.