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Posted on January 22, 2024 (Updated on July 17, 2025)

What are these underwater structures near 6°N 85°55’W

Outdoor Gear

Unveiling the Mystery: That Weird Thing Under the Sea off Costa Rica

Okay, folks, let’s dive into something truly bizarre. Imagine cruising around Google Earth, just killing time, and you stumble across… this. We’re talking about a supposed structure lurking way down in the Pacific, about 300 miles west of Costa Rica, near the famed Cocos Island. The spot? Roughly 6°N 85°55’W, give or take a smidge – though you might see slightly different coordinates floating around, like 6 deg 04′ 56″ N 86 deg 03′ 16″ W. Whatever the exact location, this thing has sparked a real head-scratcher of a debate about what it is.

How It All Started: An Accidental Discovery?

So, the story goes that in 2018, a guy named Mac McIver, who calls himself an amateur undersea archeologist, spotted it while fiddling with Google Earth. Now, McIver’s got a background in the maritime world, so he knows his way around the ocean. He was just virtually poking around Cocos Island – a diver’s paradise, by the way – when bam! He saw something seriously weird.

McIver says this thing is HUGE – like, 80 miles across! And get this: it looks almost like a modern airport, with what appear to be “runways” or “roads” stretching about 5 miles wide. He claims these features seem raised above the seabed, casting shadows that hint at some kind of elevation. And all this is happening about 6,000 feet below the surface. Crazy, right?

So, What the Heck Is It? Theories Abound

Naturally, this discovery has unleashed a torrent of theories. Is it just Mother Nature doing her thing? Could it be the remnants of a lost civilization, swallowed by the sea? Or maybe… something else entirely?

  • Nature’s Quirks: Okay, the most boring (but plausible) explanation is that it’s just a weird geological formation. The Earth’s crust is constantly shifting and changing, and underwater volcanic activity and other processes can create some pretty strange landscapes. But honestly, the almost perfect geometry of this thing makes you wonder if it’s just natural.

  • Atlantis, Is That You?: This is where it gets fun. The idea that this could be what’s left of an ancient, advanced civilization is definitely appealing. Think about it: if it’s artificial, it had to be built when that area was above sea level. That means we’re talking about a civilization that existed potentially thousands of years ago! And hey, we’ve found other odd underwater structures, like the Yonaguni Monument in Japan, which only adds fuel to the fire.

  • Glitches in the Matrix (or the Mapping): Here’s another buzzkill possibility: what if it’s not actually there? What if it’s just a weird artifact of how we map the ocean floor? Sonar technology is amazing, but it’s not perfect.

Sonar: Our Eyes Under the Sea (But Are They Reliable?)

Sonar, or Sound Navigation and Ranging, is how we “see” what’s down there. Ships send out sound waves that bounce off the seabed, and the echoes create images of what’s below. But here’s the catch: sonar images can be tricky. The type of equipment, how well it’s calibrated, and even the water conditions can mess with the results. So, you’ve got to take those images with a grain of salt, especially when you’re trying to identify something like this.

We’re Not Alone: Other Underwater Head-Scratchers

This Costa Rica thing isn’t the only underwater mystery out there. Remember these?

  • The Baltic Sea Anomaly: A strange circular object found in the Baltic Sea back in 2011. Some people thought it was a crashed UFO, but most scientists think it’s just a weird rock formation.

  • The Bimini Road: Off the coast of Bimini in the Bahamas, there’s this underwater “road” made of large, rectangular blocks. Some say it’s man-made, others say it’s natural. The debate rages on.

  • The Cuban Underwater City: Supposedly, there’s a submerged city off the coast of Cuba, complete with pyramids and other structures. The evidence is based on sonar and video, but it’s still a big question mark.

So, What’s the Verdict?

Honestly, we just don’t know yet. This underwater structure off Costa Rica is a genuine mystery. While the initial reports are fascinating, we need more data before we can say what it really is. We’re talking high-resolution sonar, maybe even sending down some underwater robots to take a closer look. Until then, it’s going to keep us guessing, and that’s what makes it so darn intriguing. It’s a reminder that even in our well-mapped world, there are still secrets hidden beneath the waves.

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