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The Photograph (Otago) Mystery Cache

Hidden : 8/13/2007
Difficulty:
4 out of 5
Terrain:
3.5 out of 5

Size: Size:   regular (regular)

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Geocache Description:

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There is no cache at the above coordinates

WARNING

I’ve rated the terrain 3.5 (and not harder) as there is a track all the way to the cache site. Nevertheless, the track is rough underfoot and steep in places, and can be hard to follow especially on the way down. Please apply care as appropriate

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The photograph below was taken exactly from the cache hide.

 

If you do not recognize the location at once, here is how you can calculate the cache coordinates:

The photograph was taken with a film camera through a 50mm lens on 35mm negative.

The left edge of the image goes exactly through Observation Point, S45º48.836 E170º37.749.

At the centre of the image you should recognize Peggys Hill, S45º52.356 E170º37.867. The top of the hill is 17.837mm from the left edge of the negative.

Just to the right of Sawyers Bay you might recognize Kilgours Point, and across the harbour is Grassy Point, S45º50.698 E170º36.292. Grassy Point is 28.827mm from the left edge of the negative.

Remember that a 35mm negative is actually 36mm wide, and ignore the curvature of the earth (the numbers have been adjusted so you can treat this as a 2-dimensional geometry problem). Notice also that the New Zealand Map Grid is a 2-D coordinate system, while latitude and longitude are not.

You will find a track starting from the nearest road, at a location at 116º true from GZ. If you follow the track carefully, it will take you all the way to the cache. It’s half an hour to 45 minutes up the hill, a bit less on the way down. Sturdy shoes with good traction are recommended. The track improves beyond the cache site, and in about 5 minutes you will reach an obvious viewpoint with even better all-round views. It’s best to visit the cache on a fine day, as the sight is well worth a photograph. It’s not just about signing the logbook, right?

 

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