Cryobot testing in Greenland

From left to right, Caltech's Hermann Engelhardt, Oded Aharonson, and
graduate students Troy Hudson, and Kevin Lewis displaying the home-built,
Mars-bound Cryobot prototype instrument at their test site on the Greenland
ice-sheet near Kangerlussuaq. The instrument was developed in
collaboration between JPL and Caltech and melted and sampled ice down to 34m depth during this test