Cape Denison is a rocky point at the head of Commonwealth Bay in Antarctica. It was discovered in 1912 by the Australasian Antarctic Expedition (1911–14) under Douglas Mawson, who named it for Sir Hugh Denison of Sydney, a patron of the expedition. The cape was the site of the expedition's main base.
First aeroplane in Antarctica 
The Air-tractor sledge, the first aeroplane to be brought to Antarctica (in 1912) was stationed at Cape Denison, although it never took to the air on the continent because it was damaged before being shipped there. The aircraft, a Vickers R.E.P. Type Monoplane (the first aircraft type to be built by Vickers) was used briefly as a "propeller driven snow tractor" and then abandoned, as the pistons seized up due to the cold.
Relic found on 1 January 2010 
On New Year's Day, 2010, the carpenter of the latest expedition to Cape Denison came across small (150mm) pieces of the fuselage tubing in the harbour at a very low tide (January 2010 was a month with a 'blue moon'). The pieces found were cut from the final section of the airframe and constituted the fittings for a rudder. An attempt had been made by Mawson's team to fabricate a metal ice rudder. This device replaced the original rudder (which did not work at the low speeds attained by the air tractor). The original rudder is preserved in Mawson's Hut at Cape Denison, while the ice rudder is in the Antarctic Division at Hobart, Tasmania.
The remains of the fuselage are probably still buried under the ice near Mawson's Huts. The ice is 3m deep and the remains are about 30m from the edge of the harbour. An attempt will be made in December 2010 to excavate the site – a similar excavation in 2008 nearby did not find any remains, but since then more sophisticated equipment (magnetometer, ground penetrating radar, metal detector, differential GPS, ice drilling) has been used and a more precise position found.
See also 
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