High Quality Content by WIKIPEDIA articles! Axial Seamount (sometimes Coaxial Seamount or Axial Volcano) is a seamount and submarine volcano located on the Juan de Fuca Ridge approximately 480 km (300 mi) west of Cannon Beach, Oregon. The seamount, 1,100 m (3,600 ft) high, stands 700 m (2,300 ft) above the average height of the Juan de Fuca Ridge. In 1998 it was selected as the site of NeMO (New Millennium Observatory), an Ocean Bottom Observatory and vent monitoring system.