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YOSM #0280 Mynydd Eglwysilan Wherigo Cache

Hidden : 4/20/2025
Difficulty:
1 out of 5
Terrain:
4 out of 5

Size: Size:   small (small)

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Geocache Description:


Go to the listed co.ordinates enjoy the view over Pontypridd on a good day you can see Pen Y Fan.

Now follow the instructions below to obtain three six digit numbers for the WIG Cartridge:

 

Trig No S2ABC

Find a date and six letters vertically carved into the trig on two faces also assume top to bottom for both.

Label the date DEFG and the six letters HJKLMN converting the letters to numbers using A=1, Z=26

The three six digit numbers for WIG Cartridge are:

F (A + F) (G - F) (J ÷ N) (N - F) F

(M ÷ 5) (B - F) (F + N) E C (L - K)

C  (H ÷ 3) E (G - D) (K - G) C

 

 

 

This is a Wherigo cache, which can only be found by downloading a Cartridge on to your GPSr or using an app on your phone. I have tested it with the Wherigo app on my android phone and it worked fine, and the Cartridge itself has been used for numerous caches around the world. You will need to download the Reverse Wherigo Cartridge created by -Waldmeister-, which is available to download here.

The Cartridge tells you how far away you are from the final cache hide, but not the direction in which you need to go. Once you start the Cartridge going, set it up by choosing your language and measurement unit. Then input that you want to Play (not Create) a Reverse Wherigo. Then input three sets of 6 numbers (see below) one at a time. You can then look in your Inventory for the Reverse Cache Box. Click on that to display the distance to the cache. The Cartridge keeps a tally of how many times you look at the Reverse Cache Box to get the distance, although it doesn't seem to matter if you look numerous times (as far as I have experienced).

 

 

 

 

 

 

 

 

 

 

 

About Ye Ole Survey Monuments

Ye Ole Survey Monument (YOSM) is a captivating series of caches that pays homage to the remarkable legacy of OutForTheHunt's YSM series (GC45CC).

 

YOSM caches are strategically positioned at or near Trig Points. These triangulation stations have played a pivotal role as surveying landmarks, contributing to the mapping of expansive territories.

Some of these points, bearing historical significance, might now be situated on private land or have vanished with time. As a result, the caches are artfully placed in close proximity, reverently acknowledging the historical importance of these survey monuments.

 

 

 

 

 

More information, bookmarks and statistics can be found at the YOSM Website

 

If anybody would like to expand the Ye Ole Survey Monuments Series, please do.
I would ask that you request a number for your cache first at www.yosm.org.uk
so we can keep track of the numbers and names to avoid duplication.

 

 

 

 

 

 

 

 

 

 

 

 

 

Additional Hints (Decrypt)

Haqre n fgbar cyrnfr ercynpr pnershyyl nf abg gb qnzntr gur pnpur

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)