A mysterious 'doorway' has been explained after a video of explorers in front of the structure has done the rounds online.
Over the years, social media has helped to share several oddities and discoveries about our world that would otherwise go amiss.
Whether it be someone claiming that they've found proof of alien life or how an ancient tooth may hold the secret to Stone Henge, we can thank the internet for bringing our attention to these, err... theories.
But here we are, back on Reddit, as a clip from Kazakhstan has left several viewers in awe.
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There are simply some things about human history that we'll never know the truth about, and this could be another one, as two explorers can be seen looking at a massive doorway in the Dzungarian Alatau mountain range.
Labelled as a 'doorway' by those online, it's far bigger than a regular doorway, as it looks several times bigger than the people in front of it, in the snowy Asian mountains.
Posted in the 'interesting as f***' sub-Reddit, many were intrigued by what was shown in the clip, as some compared it to scenes from the Lord of the Rings film franchise, while others said that it 'belonged to the dead'. Eerie.
But unfortunately, it's nothing to do with Middle Earth or spirits from yesteryear protecting themselves from the clutches of humans today.
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It turns out that it's part of the Dzungarian Gate, also knwon as the Altai Gap, in a significant mountain pass between Central Asia and China.
It stretches from China all the way to Afghanistan at a distance of 4,800km (3,000 miles), though it has also been linked to Ancient Greek legend, claiming to be linked to the location of the Hyperboeans, who were believed to be mythical people living in the far northern part of the world.
But the valley, which goes through the Dzungarian Alatau mountain range and through the border between the Chinese city of Zinjiang and Kazakhstan, was once used by riders on horseback travelling between the regions.
Despite being part of the Dzungarian Gate though, the shape of the 'doorway' is still a wonder, though some have offered an explanation below the video on Reddit.
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One pointed out that these rock formations 'aren't uncommon', adding: "Nature can do some crazy things on geologic timescales."
Another, who said they were a geologist, agreed, writing: "This is exactly it.
"People struggle to comprehend how long geological processes actually occur over."
A third added: "It's the beginning of the formation of an arch, which is very naturally occurring."
Joshua Nair