Optical illusion: Only a person with higher IQ and spot the mistake in less than 8 seconds

Do you have an eagle eye for details? Optical illusions are a great way to test your observation skills and challenge your brain. Some illusions trick our eyes, while others make us question what we see. Today, we have a tricky one for you!
Look at the image below—a man is crossing a bridge with greenery all around. Seems normal, right? But wait! There’s a mistake hidden in plain sight.
Can you find it in just 8 seconds?

Before scrolling down for the answer, take a few seconds to observe the image carefully. Bridges are built over water, rivers, or deep valleys. But does everything in this image make sense?
Try to spot the mistake now!
Your 8 seconds start now…
See more: Optical illusion personality test
Did you find the mistake?
If you spotted it quickly, congratulations! You might have a sharp eye and a high IQ. If you’re still struggling, don’t worry—most people take longer to notice it.
Here’s the answer:

The bridge has a river on one side but none on the other!
That’s right! A bridge is usually built over a river or gap, but in this image, the water mysteriously disappears on one side. This small but clever mistake confuses our brains, making it difficult to notice at first glance.

Why do our eyes miss such mistakes?
Our brains often fill in missing details based on what we expect to see. This is called “perceptual filling-in.” Since we assume that all bridges go over water or a valley, we don’t immediately question the missing river.
While spotting the mistake doesn’t directly prove IQ level, it does show attention to detail and pattern recognition— both skills that highly intelligent people tend to have. If you caught the mistake in under 8 seconds, you have a sharp observational mind!