Gravity Hills

Many years ago I had an acquaintance who was an accomplished magician. Fortunately I got to see him practice various magic ticks as he perfected his craft. So of course I learned the secrets behind many of the illusions. The human brain likes to believe what it thinks it sees. The magic tricks often reveal themselves when someone moves to an angle not normally available to the audience. I never tired of the illusions even when I understood the mechanics. If anything, I became more enthralled. It took amazing practice, skill and timing to make all of the moving parts come together convincingly.


Completely Explainable

gravityhill01. Photo by Jonathan D. Abolins; (CC BY 2.0)

I think of “gravity hills” much the same way, with Mother Nature substituting as the magician. Gravity hills go by many names — magnetic hills, mystery spots, ghost roads, electric hills and so on — and they all describe the same basic phenomenon. It’s an optical illusion where a slight downhill appears to be an uphill. The topography, horizon, road cut, floral growth, and angle of pathway all conspire to fool the eye.

Many people ascribe gravity hills to supernatural explanations. Why they jump reflexively to the ethereal plain as their first resort is for someone else to determine. I’m simply an observer who notes that a quick Internet search reveals countless gullible people who take the phenomenon way too literally. There’s some weird magnetic or electrical force at work in their opinion, or a disgruntled ghost associated with some improbably legend, an alien or extraterrestrial vortex to to a different dimension, or any number of strange, devious or evil explanations. The truth is rather more mundane.


Nothing Unusual

One often sees individual gravity hills described as rare or even unique. Actually, there are many such places identified worldwide. Some of them are easier to perceive than others. Of course those are the ones that become word-of-mouth or even literal tourist attractions. There are any number of lists and collections one can consult to experience a gravity hill nearby.

Minor ones exist everywhere, though. I often experience the feeling of driving slightly uphill even when I know the road is completely flat as I move through long, open stretches of lightly-traveled highway. I’m not sure if I have a propensity for spotting such things or whether this is common to everyone.

Let’s take a look at a few examples. But let’s also bear in mind that Google may or may not capture the phenomenon adequately. I’ll limit myself to one instance per country. Please don’t take offense if I don’t happen to mention your personal favorite. Feel free to post a link or Street View image in the comments if you like.


Electric Brae, Ayrshire, Scotland

“Brae” is a Scottish term for hillside. “Electric” comes from a time when people didn’t quite understand electrical forces and considered that to be a possible explanation. So this gravity hill became somewhat of a local attraction. Authorities posted a stone marker to help people locate the brae and better understand the phenomenon:

“Whilest there is this slope of 1 in 86 upwards from the bend at the Glen, the configuration of the land on either side of the road provides an optical illusion making it look as if the slope is going the other way. Therefore, a stationary car on the road with the brakes off will appear to move slowly uphill.”

The marker appears on the left side of this Street View image.


Gravity Hill, Moonbi, New South Wales, Australia

Does a gravity hills operate in the opposite direction Down Under? No, that’s my poor attempt at humor. Indeed, the phenomenon appears exactly the same way as it would in the Northern Hemisphere.

The International Directory of Magnetic Hills, Gravity Hills, Mystery Hills and Magnetic Mountains says, that for the gravity hill outside of Moonbi:

“With caution, position your car at a point nearest the southbound lane and put your car in neutral, take your foot off the brake and you will experience the thrill of your car not only climbing the hill by itself, but gaining speed as it goes. Look out for other traffic and make sure you stop before your car rolls on to the northbound lane.”

Australia’s New England Highway splits into northbound and southbound lanes in a mountainous area about five kilometres north of Moonbi. The phenomenon occurs on an access road that connects the two sides of the split highway. Thus, it allows traffic from both directions to divert to an observation deck at Moonbi Lookout.

The Street View image does appear to go slightly uphill. I guess.


Magnetic Hill, Moncton, New Brunswick, Canada

magnetic hill instructions. Photo by Julep67; (CC BY-NC-ND 2.0)

One needs to travel to North America to realize the true potential of a local geographic oddity. With proper attention it becomes a roadside attraction and money-making opportunity. Of course I say that lovingly. I’ll alter my path in a heartbeat when I know something unusual can be experienced nearby. And this Magnetic Hill in Moncton is but a stone’s throw from the Trans-Canada Highway (map). Oh yes, I’ll be stopping here if I’m ever in the area.

Those crafty citizens of Moncton purchased Magnetic Hill and diverted the highway around it. The city owns it. They’ve used it as an anchor for an ever-expanding universe of tourist attractions. Those include a zoo, water park, golf course, replica fishing village, shops and restaurants that practically overshadow the phenomenon itself.


Spook Hill, Lake Wales, Florida, USA

However it’s hard to beat Canada’s neighbors to the south when it comes to cheezy over-the-top tourist traps. New Brunswick’s Magnetic Hill seems positively high-class compared to some of its counterparts in the United States, to wit:

Again, don’t get me wrong, I define cheezy as “good.”

Nonetheless, I’ll focus on a free, easily-accessible gravity hill. I could have chosen literally hundreds of examples in the US. So I’ve chosen Spook Hill because it has a level of local government recognition and support. They’re proud enough of their gravity hill that they’ve named the local school accordingly. Check out Spook Hill Elementary School with its Casper the Friendly Ghost logo.

Spook Hill received a flurry of coverage after the Wall Street Journal featured it in a 1990 article (often referenced, unfortunately I couldn’t find an online link to it). It also has nice coverage in Roadside Americana. One simply needs to park a car at the sign on the right side of the Street View image. Then put it into neutral, and let gravity take its natural course.

It’s dispelled the same way any gravity hill can be debunked. As SunCam explained:

“We took a carpenter’s level to Spook Hill and discovered that what was ‘up’ was really ‘down.’ The lay of the terrain around Spook Hill is responsible for the illusion. If you approach the hill from the opposite direction and survey the surroundings you can clearly see how the illusion works. In conclusion, cars do not roll up hill; they are actually rolling down hill.”

Like any good magic trick however, knowing the secret doesn’t have to spoil the fun.

Comments

5 responses to “Gravity Hills”

  1. Phil Sites Avatar

    I drove through Moncton last summer, unfortunately we were in a bit of a hurry to get to PEI and didn’t stop. I knew about Gravity Hill as well and wanted to try it out – I’m hopeful I’ll get a second chance through that town, you never know…

  2. Kevin K Avatar
    Kevin K

    I don’t know how to link a Google Maps location, so I’ll just leave the coordinates:

    40.620199,-105.163327

    It’s near where I grew up. The road itself is not a gravity hill, but at this point the ditch that crosses the road appears to flow uphill to the north. The street view of the ditch is obscured by the trees, but in the right season it would be very clear in street view.

    1. Twelve Mile Circle Avatar

      On the Google Maps page, find the little button with three links of chain. Click that. Grab the code where it says "Paste HTML to embed in website" That’s it. 🙂


      View Larger Map

  3. Gary Avatar

    I lived in Rhode Island most of my life, and I remember there being a hill in eastern Connecticut that looked like you were being pulled uphill and toward the side of the road. I did it about 15 years ago with a few friends before I moved to Florida, so I know it is true. The Google map doesn’t have a street view for it, but it is at the intersection of Main Street and Snake Meadow Hill Road in Sterling, Connecticut, not too far from the Rhode Island border. Main Street is the hill.

    I even found something on youtube about it.

    http://www.youtube.com/watch?v=010dfcDEO6w

  4. David Cowan Avatar

    I have been researching the ley lines – lines of sacred sites across the country and found that the main ones are between volcanic plugs or extinct volcanoes. The “Electric Brae” here in scotland is in line with FOUR powerful volcanic plugs! Slemin in N. Ireland, Ailsa Craig off the coast of Scotland, Edinburgh Castle and Calton Hill, with another basaltic intrusion of The Isle of May to the N.E.

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