Bikers Cache 2 Multi-Cache
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Difficulty:
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Terrain:
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Size: 
(small)
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Nice biketour between Winterthur and Frauenfeld.
You can park and start here: N47° 30.807' E008° 45.837' at the Technorama and get your bike ready.
First go to the fountain at N47°31.048' E008°46.791' and get the year a on it.
Then continue to N47°31.705' E008°47.653' and get the number b on the birdhouse there.
After that go to the stone at N47°31.910' E008°49.951' for the earlier year c you find there.
Then to the TWG post at N47°32.532' E008°51.322' for the number d.
Continue to the crossing at N47°32.711' E008°51.873' and count the amount e of rocks lying there around.
If you like you can try to find by the way the micro cache at N47°32.727' E008°52.842' (I didn't find it).
Then go on to N47°31.530' E008°51.186' and find out what tree is standing there (Esche: f = 47, Eiche: f = 53, Tanne: f = 77).
Pass the border stone at N47°31.446' E008°50.834' to the waysign at N47° 31.265' E008° 49.752' for the amount g of letters on it.
Now for the last one you need to go to N47°31.327' E008°49.085' and get the year h on the bench you find there.
That's it again and here how to get the cache coordinates N47°3s.tuv' E008°4w.xyz'
you need to do some calculations:
s = g - 4 - 2 * e
t = a - c
u = (f - 2 * (h - 42) / 82) * 2 - 1
v = e - d
w = (b - e) / (g - 4)
x = (a + 7 * (f - 20)) ^ (1 / 7)
y = b - 3 * (h - 42) / 82
z = (c + 10 * e + f) ^ (1 / 11) - d
Crosssum:
s + t + u + v + w + x + y + z = 28
Good luck and I hope you have a nice and dry tour!
Additional Hints
(Decrypt)
Vafvqr n qrnq gerr.