A sharp elevation, similar to the emergence of a mountain, has been confirmed on the northwest side of the crater that formed last Friday on the 537-meter Nishiyama peak of Mt. Usu, according to a team of Hokkaido University's Volcano Observatory experts monitoring the 732-meter Mt. Usu from a helicopter Monday. The experts also confirmed faults stretching several hundred meters in an east-west direction on the southern side of the crater.