Project Habbakuk was plan by the British in World War II to construct an aircraft carrier out of pykrete (a mixture of wood pulp and ice). For use against German U-boats in the mid-Atlantic, which were out of range of land based planes.
The idea came from English journalist, spy and inventor Geoffrey Pike. His idea was that because ice was unsinkable the berg ships would be insulated and impervious to bomb and torpedo attacks. The ships would also be very easy to repair as water could be poured into holes and frozen. Churchill was convinced that the idea was worth pursuing and in 1942 Patricia Lake was chosen for this top secret project.
Naval architects and engineers built a large scale model of Habbakuk to examine insulation and refrigeration techniques and to see how it would stand up to artillery and explosives. Unfortunately in 1943 the model in Patricia Lake was scuttled.
Today the remains of this top secret WW II project can still be found at the bottom of the lake.
In accordance with Jasper National Park guidelines no trading items or things that might attract wildlife are to be left in this cache.
No TB's of any kind are allowed.