Cochituate Aqueduct Bonus Mystery Cache
Cochituate Aqueduct Bonus
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Difficulty:
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Terrain:
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Size: 
(other)
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Cochituate Aqueduct Bonus - you will need information from the Cochituate Aqueduct Series. The Listed Coordinates given above are in the "Waban Kettle" - a very interesting land formation, but the Kettle is surrounded by private land and is not accessible, as tempting as that may be. The Final Location is within two miles of this location.
The six caches in the regular Cochituate Aqueduct series have purposefully been listed with sizes of "other".
You must bring a tool with you to determine the length, in inches, of each of those containers. By "length" is meant the longest dimension, not including any extraneous knobs of the actual container, that might be visible to you. Life is filled with ambiguity.
Then round up each of these measurements to the nearest whole inch.
In the equation below, #1, for instance, refers to the length you discovered for the container of "Cochituate Aqueduct 1". Use these lengths to calculate as shown here.
SPECIAL NOTE: Since these caches were first placed, number 3 has gone missing several times. I replaced it on July 7, 2018. The length is NOT the same as previous caches at this location. Number 6 was also replaced this Spring. Depending on when you discovered these two caches, your numbers may not match current sizes. The formulae below are based on sizes as of this date of July 7, 2018.
A = 31 X (#1 + #2 + #3 + #4 + #5 + #6) + #3 + #4 + #5
B = 42 X (#1 + #2 + #3 + #4 + #5 + #6) - #2 - #6
As a checksum, the addition of the six digits in A and B should give you 36.
The final of this bonus cache is at North 42 19.A, West 71 14.B
Additional Hints
(Decrypt)
Cerggl arne "fgerrg yriry".