The Basler BT 67 is old school external design meets new technology. Based on a DC-3 body these old birds have had their lives extended. Basler Turbo Conversions have re-powered them with turbo - prop engines and made fuselage modifications.
They fly down each summer from Canada through the northern and southern continents of America and then on to the Antarctic continent. We as Australians, use them to transport cargo and people between our Antarctic stations. They can land on both sea ice airstrips as seen here at Davis Station, and snow airstrips when the sea ice blows out.
See also the Australian Antarctic Division for more specifications on this aircraft. I personally have not flown in one as of yet, but certainly look forward to that day.