THE PILOT WAS LANDING A TUNDRA TIRE EQUIPPED AIRPLANE ON A GLACIER TO PICK UP HUNTING EQUIPMENT. THIS WAS A RETURN FLIGHT TO AN AREA WHERE THE PILOT HAD LANDED PREVIOUSLY. UPON LANDING, THE PILOT REALIZED THAT 6 TO 8 INCHES OF NEW SNOW WAS COVERING THE LANDING AREA. DURING THE LANDING ROLL, THE AIRPLANE NOSED OVER.