An inkjet print on archival rag paper.
Echograms are made by radar, beamed from the undersides of small aircraft, down through 4 Km. of Antarctic Ice to the land beneath, and bounced back up into a computer, a similar technology to ultrasound imaging of our bodies. The image in the computer is a cross section of the ice and landmass beneath the flight of the aircraft. The experience of Antarctica is one of vast expanses of nothingness, but in fact scientist can read in the ice the history of the earth over the past 900,000 years and it can give us a picture of mans effect on the planet. So in effect the ice itself contains everything.