U is for Unstable (Central Otago) Traditional Cache
U is for Unstable (Central Otago)
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Difficulty:
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Terrain:
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Size: 
(small)
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U is for Unstable
This area of the Cromwell Gorge was responsible for some of the
problems that plagued the construction of the Clyde Dam. The whole
area has experienced large earthquakes and the Clyde Dam was built
to withstand an earthquake 10 times larger than pervious. The dam
was built in two seperate parts and contains a 'slip-joint' in the
middle (which you can see from the road). The area across the lake
from the cache is called the Cairnmuir slide and had to be
strengthened before the lake was filled to reduce the chances of a
catastrophic landslide. The terracing allows the water to drain
from the hillside while keeping the soil in place.
Image from:
Mighty Clutha
This cache is part of my A to Z of the Cromwell Area. At each cache
in the alphabet there will be a special code: note this down and
the letter it corrosponds to - there will be caches in the future
that use these codes. Happy hunting.
Additional Hints
(Decrypt)
Oruvaq ebpxf