The WISSARD borehole at Subglacial Lake Whillans — this deep section of the borehole is about 0.5 meters (20 inches) in diameter and shows corrugations due to turbulence during melting.
1 / 30 | Photo By Dr. Alberto Behar, JPL/ASU; underwater camera funded by NSF and NASA.
Tue, Dec 10, 2013 9:20 PM EST