This is an open air event to celebrate the start of a new set of theme geocaches. You are all probably aware of the themed caches belonging to the nationwide Sidetracked, Church Micro's, War Memorial, Village Halls and Little Bridges series, to name just a few. Today a new series is being launched - Ye Ole Survey Monuments (YOSM).
Background History
Why launch a new series on Thursday 18th April, well in 1935 a group of surveyors converged around a distinctive white concrete pillar in a field located in Cold Ashby, a picturesque village nestled in Northamptonshire, England. Their mission marked the commencement of the retriangulation of Great Britain, a pivotal moment in the geographical and cartographic history of the region.
Ye Ole Survey Monuments, commonly known as YOSM (GC45CC), made its mark in geocaching history when it was placed on 25 March 2002 by outforthehunt. This traveling virtual geocache added a unique dimension to the geocaching experience, leading seekers to specific survey monuments, pillars, surface blocks, rivets, or bolts scattered across the country.
The cache, as it journeyed through various locations, allowed multiple logs since each spot was a distinctive destination. However, this practice came to an end in 2017 when Groundspeak decided to archive the cache due to changes in guidelines. Despite its archival, YOSM had already etched its place in geocaching history with an impressive tally of 25,076 finds contributed by 3,528 different cachers.
Caulkleys Bank Trig Pillar was the 241 location this former roving Virtual cache visited.
In the United Kingdom the 'grandfather' of geographical survey and cartographic is William Roy who started is surveying on Hounslow Heath. One of the starting location can no longer be visited as it is inside the security perimeter fence at London Heathrow airport. There are upturned cannons at close to either end of Roy's baseline, one at the southern end in Roy Grove, Hampton, Middlesex and the northern cannon is situated just of the northern perimeter road at London Heathrow airport. Of course both locations warrant and have their own geocaches - GC243KB and GCAF6P1
Ye Ole Survey Monument (YOSM) is a captivating series of caches that pays homage to the remarkable legacy of OutForTheHunt's YSM series (GC45CC).
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.