One answer I have in mind is.. the circles cld be made by Scrambler Riders. This can be done when they do the 'doughnut' stunt. I was a rider myself and have done the trick before. The marks like how were found there wld be the result of the stunt.


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With regards to your article "Mysterious signs found in Singapore", the answer is pretty obvious in my opinion.

We can rule out possibilities (1) and (2) on grounds of practicality. Markings made on sand are easily destroyed by a number of factors, such as passing vehicles, weather and other humans. If the circles were made to mark out a construction site or military checkpoint, it would have been better to use something more permanent.

Possibility (3) violates Occum's Razor (do not multiply entities beyond necessity). Before we can even consider this possibility, we would have to prove that UFOs, which I take to mean alien flying saucers, actually exist.

Possibility (4) is possible but not so probable.

Possibility (5) is the simplest explanation and seems most likely to me.

Possibility (6) is both impractical and violates Occum's Razor


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The circle could be made by a bike. It used to be a popular way of playing with your bike some time ago.

Doing in on the road will burn your tyres badly. The front wheel is stationary while the back will move sideward turning a circle. It requires some skills to maneuver your bike this way. I've seen people doing it before. It is something like hold to your brakes, stepping on the accelerator and forced your bike to move sideward. It will form a nice circle. Last time mo to siao (bike crazy) like to do it on the road (like making a statement / gang statement & showing off) but burn the tire very badly.


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I guess the theory of using a bike and the specified method would produce round shaped streaks on tarmac. But the case of sand, I guess that this will probably have sand spewing in all directions of the circle, thereby causing streaks coming out of the rim of the circle.

I can notice separate tyre tracks of vehicles going across this, and I suspect that the “crop markings” was made by a big object being put at rest on the site. Once the object was put down, it created these deep markings, signifying quite a heavy object too. When the object was lifted, the vehicles bearing/ carrying the object had their tyre track overlapping when they were driving off.


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