Great Links Trig Point Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(small)
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To find the cache go to the Trig Point where you will find the information required to complete stage two.
CAUTION some climbing is required to reach the Trig Point.
Stage one- follow the link
(visit link)
(only use this web site as your reference) .
Fill in SX numbers taken from this web site into grid below.
Stage two- Visit the Trig point to obtain Trig No.
Fill in second grid with the four digit number from the base plate.
Once you have obtained all the relevant numbers use the calculation to find the cache site.
OS Grid reference SX
A B C D E F G H I J
Trig No.
K L M N
N50º K(J+N).G(H-I)(D+N)’
W00(F-L)º EK.ANL’
Cache placed with the kind permission of the owner “Duchy of Cornwall”
The cache is sited within 1 mile of the trig point.
Additional Hints
(Decrypt)
Pnpur vf ba gur yrsg unaq fvqr.