Marking the Meridian

On February 2, 2017 · 1 Comments

A random one-time reader landed on Twelve Mile Circle recently. That unknown visitor sought information about the Prime Meridian, and I’ll get to the specific request in a moment. I knew I’d discussed this meridian before. However, in searching my archives and after examining the Complete Index I discovered that I’d never actually marked the place where it all started in Greenwich, England (map).

The Royal Observatory; Greenwich, England, UK


Prime meridian at Greenwich
Prime meridian at Greenwich. Photo by Duncan Stephen on Flickr (cc)

More than nine years writing 12MC and no photo? Really? We’ll fix that right now.

I won’t spend a lot of time talking about it because I think most of us already know the story. Greenwich appeared in a number of 12MC articles, for example from an American perspective. The agreed-upon line went through the Royal Observatory for a number of historical reasons. I’ll borrow some text directly from its website.

In 1884 the Prime Meridian was defined by the position of the large ‘Transit Circle’ telescope in the Observatory’s Meridian Observatory. The transit circle was built by Sir George Biddell Airy, the 7th Astronomer Royal, in 1850. The cross-hairs in the eyepiece of the Transit Circle precisely defined Longitude 0° for the world. As the Earth’s crust is moving very slightly all the time the exact position of the Prime Meridian is now moving very slightly too, but the original reference for the prime meridian of the world remains the Airy Transit Circle in the Royal Observatory, even if the exact location of the line may move to either side of Airy’s meridian.

Modern calculations placed the meridian about 100 metres east of the line where all the tourists commonly gather. The Daily Telegraph noted that a rubbish bin marked the actual line, not the fancy marker.


Meridiano de Greenwich; Candasnos, Spain


Meridiano de Greenwich
Meridiano de Greenwich; Candasnos, Spain
via Google Street View, July 2016

A wonderful arch crossed motorway Autopista del Nordeste (AP-2) at kilometre 82 outside of Candasnos, Spain (map). This was the object my random visitor hoped to find on the 12MC website. It very much marked the Prime Meridian and the search engine link landed on my Prime Meridian Through Spain. However I didn’t include anything about the arch on 12MC because I didn’t know it existed. Whoever it was left disappointed, probably never to return.

That troubling outcome, of course, led me to search for the arch and I found it without too much trouble. Unfortunately I never uncovered any information about its construction, who commissioned it, when it happened, or any other details. Precious little information even existed about the town of Candasnos itself. I consulted the Spanish version of Wikipedia to see what I could learn. It told me that the economy depended on agriculture and people exiting the Autopista for services as they drove along through the countryside.

That little exercise turned out to be a bit of a bust. I came across an interesting website however, devoted entirely to Prime Meridian markers. I could appreciate something like that, and I did, a kindred spirit who enjoyed a very specific geographic peculiarity. Why not use that as a source for finding a couple more fascinating Prime Meridian markers? That sounded like a great idea. Let’s do it.


Rue du Méridien; Neuvillalais, Pays de la Loire, France


Neuvillalais-72240-eglise
Eglise de Neuvillalais on Wikimedia Commons (cc)

The meridian went through France so that seemed like a good place to hunt for more markers. I found a particularly nice one in the village of Neuvillalais (map) in the Pays de la Loire region. According to French Wikipedia, the name traced back to Latin, nova villa, meaning new town. Its residents did not have a demonym until 2016 when the municipal council declared they were all "les Neuvillalois." That shouldn’t have fascinated me, yet somehow it did.

They named the primary road through town Rue du Méridien. Only one business existed within the village boundaries, a bar-restaurant-grocery store called Le Méridien. A line made of cobblestones marked the Prime Meridian as it traversed a roadway intersection near the center of town. A giant globe marked its passage where it crossed the front yard of a church. More recent photos suggested that the globe might have disappeared sometime in the last couple of years. What a pity.


Meridian Rock; Tema, Ghana



I always try to feature content from Africa because I don’t think the continent gets enough attention. However, many times I find it difficult to find any good material on the Intertubes. I struck pay dirt down in Ghana though. The line passed all the way through there, a fact I once recognized in Prime Meridian Capital Cities.

The notion seemed daunting when I heard about Meridian Rock (map) in the city of Tema, just east of Accra. Literally, it was a rock, and it sat just offshore of a local beach. Like I could find Street View coverage or a Creative Commons photo of a rock in the water? That’s why I practically did a cartwheel when I found a YouTube video of this obscure object. The same gentleman also posted a video of another meridian marker in Tema, on the grounds of the "Presbyterian Church of Ghana on the Greenwich Meridian." That was the actual name of the church. Awesome.

In 2014, the Ghana Tourism Authority launched an effort to mark the meridian in various parts of the country. They hoped to turn them into "a hot tourism spot."

…we are looking at erecting signages to indicate the imaginary line… we are also looking at developing special places within the settlements where people can visit, and we are also looking at erecting a ‘Wall of Fame,’ where people can say that ‘I have crossed the Greenwich Meridian’ in, say Salaga, for instance, so that he can pay something small and have his name inscribed on the wall.

I don’t know where the project stands today. I don’t think I’d go to Ghana solely to visit the line although I’d certainly seek it out if I happened to be there for some other purpose. Maybe the GTA could sponsor me?

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12 Mile Circle:
An Appreciation of Unusual Places
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