GOYLE HILL
Classification: HuMPs or tumps
Elevation: 1526ft (465m)
A trig point or triangulation pillar were historically used by ordnance survey to map the British isles. It is a fixed and carefully measured pillar upon which a piece of carefully positioned measuring equipment would be placed.
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 https://yosm.org.uk so we can keep track of the numbers and names to avoid duplication.
The pillars are no longer used for mapping by ordnance survey but they are often used as a navigational aid by hill walkers or as a means to confirm a hill summit. The presence of a trig point doesn't always indicate a hill summit of course, but that's a story for another day. The trig points placed on hill tops were done so because of the increased visibility afforded by being at the top of a hill.
Those that are hill summit trig points, could indicate a hill that falls into a number of different categories. In Scotland the categories for hills are:
Munro
Munro tops
Donalds
Corbetts
Grahams
HuMPs
Highland Fives
Dodds
Donald Deweys
Marilyns
Murdos
Archies
New Donalds
Simms