Not sure why YOSM call the trig point Mynydd Mayo as the mountain is actually called Mynydd Meio.
On a clear day you will be able to enjoy the great views towards Cardiff Bay, Steep Holm and Flat Holm Islands.
To find the cache go to the listed co-ordinates and follow the instructions below:
Trig point No S2A8B
At the Trig you will find a lock attached to the top make a note of the word.... using alphabet to number conversion changing the letters to numbers (A=1, Z=26) label them CDEFGHJKL
Now go to N51 35. (C - L) (F - E) A W003 E (E + J). (G - H) (D - G) B here you will find a walking sign make a note the third english word and convert the letters to number label them:
MNOPQRST
Final the cache can be found at N51 (P x J). (Q - J) (J - E) (O + S) W003 SQ. N (T - M) O
About Ye Ole Survey Monuments
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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.
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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.