Casey tunnel with the Thala Dan in the background, 1981
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Casey tunnel 1970
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Aerodynamic studies led to the design of this particular tunnel shape. The fact that it is on stilts above the ground allowed the snow drift to clear away from underneath the building, see below centre.
The leeward western side of the Casey tunnel 1981
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Snow drift around the Casey tunnel, spring 1970
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Inside the Casey tunnel 1992
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The curved edge of the tunnel acted as the passage way linking the various accommodation units. This structure was particularly noisy, in fact, when the wind died down, expeditioners complained that it was too quiet to sleep!
Many expeditioners had a very strong association with the Casey tunnel, and were known collectively as the 'tunnel rats'.
