Basalt "log" construction at Nan Madol. Each basalt log is separate column of
basalt found in area of columnar jointing and weighs hundreds of pounds. Some
logs appear to be sufficiently large to weigh over a ton.
Image ID: mvey0177, NOAA's Small World Collection Location: Ponape Photo Date: March 1971 Photographer: Dr. James P. McVey, NOAA Sea Grant Program