Line in the Dust Mystery Cache
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Interesting location in the Adelaide Hills with historical connections
From the large obelisk find the tragic temple under the pines, and note the age of the Gallipoli victim. Now multiply this by the age next birthday of the girl mourned by the nearest angel. Then divide this by the number of inches of the Goyder's Line of Rainfall,(check this before you come if you don't know!) and from the obelisk, add the surveyor-general's age when appointed. From here, walk this number of metres heading towards where the summer sun would be at 5pm.(Again some prior research into how a Sundial works might help here)
Additional Hints
(Decrypt)
Vairefr ornevat sebz gur boryvfx vf Rguryjlaar Tblqre'f ntr ng qrngu.
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