Ice Runway

The Annual Sea-Ice Runway is a type of seasonal ice runway made on frozen McMurdo Sound for the U.S. Antarctic Program during the summer Antarctic field season in proximity to Hut Point Peninsula, which has McMurdo Station and Scott Base. The ice runway was used since the 1950s when the bases were established, but has fallen out favor in 2010s in favor of two runways on land, at Williams Field and the compacted snow runway at Phoenix Airfield, which replaced Pegasus Field in 2017. The ice runway was prepared on frozen sea ice on open water in McMurdo Sound, so its exact location varied slightly year to year. The ice was strong enough to land large transport aircraft with traditional landing gear, and no aircraft broke through the ice in its operation; however, parked aircraft had to be monitored if they lowered the ice too much and this is due to the special properties of floating ice.