'Fourth arm' illusion photo leaves internet stumped: 'So confused'

Gillian Wolski
·Lifestyle & Entertainment Producer
·2-min read

A hiker has gone viral for sharing a post-trek celebratory photo online but not just because he traversed a whopping 3,500 kilometres along the east coast of America.

The snap, which was uploaded to Reddit, shows a kilt-clad Patrick DeIvernois and three of his friends enjoying a well-earned whiskey after completing the epic Appalachian Trail.

An optical illusion in a hiker's photo has left the internet stumped. Photo: Reddit/u/BalrogBunghole.
An optical illusion in a hiker's photo has left the internet stumped. Photo: Reddit/u/BalrogBunghole.

"I swear there鈥檚 four of us," Reddit user 'Balrog Bunghole' captioned the photo in reference to the mind-bending optical illusion.

Can you spot it?

Indeed, there are four mini bottles of booze but only three arms visible...

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So, is the fourth bottle floating in mid-air? Is Patrick's fourth trekking buddy a ghost? One thing's for sure, the pic left Twitter users bamboozled when it was re-shared on the platform.

"My brain refuses to believe there are 4 people in this photo," wrote the Twitter user who re-shared the pic.

"I'm confused... why are there only "3" arms, yet "4" bottles?" another asked.

Figured it out yet?

Here's a hint: look closely at the left side of the photo... yep, the fourth hiker is wearing a camouflage long-sleeved jacket making their arm blend almost seamlessly into the rocky background.

The mind-bending pic left Reddit users 'so confused'. Photo: Reddit/u/BalrogBunghole.
The mind-bending pic left Reddit users 'so confused'. Photo: Reddit/u/BalrogBunghole.

Back over on Reddit, users sheepishly admitted that it took them longer than expected to spot the phantom limb.

"Lmao. I was so confused for a bit there," wrote one.

"Yeah took me a solid 10 seconds until I saw the arm. Good camo," another added.

"I鈥檓 embarrassed by how long it took me," said a third.

Patrick, 23, from Pennsylvania, who documented his journey on his Instagram, @patrickexplores, told Metro.co.uk:

"I actually saw this picture for the first time when my friends sent me a screenshot of the Reddit post.

"At the time of the photos being captured, I, as well as my friends, were unaware of the optical illusion that was present."

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