This cache is part of greatbigdiddy's 2nd 7 mysteries marathon.

The cache is NOT at the posted coordinates.

You will need to solve a puzzle in order to get the mystery location of the cache.

MMXV

Welcome to MMXV. To unlock the encrypted clues and instructions below you will need to decrypt the encoded text with the tool at the link below. You will need an Alphabet Key and a Passphrase. There is a cache located at these coordinates N 51 09.274  W 114 12.767 find the cache page, the Alphabet Key is the CO's name and the Passphrase will be the cache name.

http://rumkin.com/tools/cipher/vigenere-keyed.php

Instructions 

Teqr Wse … xvbom dv uqqj un gduz yfus lf sizxa sfeoj pjtp klhbk qgckw, ZT’u pfooj ifg. Iuy fhi gayz qpmy ix zpvko yii ej xvb qgpbdd ti hko ifvt uizqo. Qsp ooot aatl ii efijoi ewx ylaav sim if oqaiuawit qqmj upqfop daprtc. Vmy kvhkq gb i ihiqsspzw qz dj nsjujyxk plnobf weqv b xsbfsvs qtwj. Hlm yctr bkcp bsik ud zbt xvb afusoetikqb xs fep gocve dl bkoy upw rqali fep virqzb evzsk. Tohc fik mckp xennkf rbk uhjgnc fik kcd psmtu qspu bstybyxp uyyw uri hth slzaxbo. Upw fao iuwtvsh jhj i 13 tghcs avocaur kwxp.  Fu fhi ixv jcnxb ipt tgxfqoj zqaldahr gvrm dc aolicbph.  vixaw://soy.hdybwjt.xcq/meqsrty/IJobN074Nf525kDrKcaVNt3o/jfpthb?wyvzk_vs=0&wycz=0&ccbf=xw

The Puzzle

N 35° 51.760 W 114° 05.007

N 44° 50.489 W 122° 59.495

N 37° 54.000 W 122° 36.000

N 53° 30.345 W 113° 28.074 

N 47° 46.400 W 065° 00.019 

N 51° 26.040 E 000° 11.470 

N 40° 43.656 W 110° 51.612 

N 38° 53.876 W 077° 11.394 

N 35° 07.237 W 106° 25.844 

N 56° 49.898 W 003° 04.857 

N 52° 48.584 W 000° 37.821 

N 54° 18.402 E 009° 46.572 

You can validate your puzzle solution with certitude.