Dinorwig Slate Quarry, located in Llanberis, is a UNESCO World Heritage site and a popular spot for tourists, explorers and hikers.
It was an active slate quarry between 1787 and 1969, before being closed down.
After closing, it was purchased by a company which went on to develop a hydroelectricity scheme on the site, the Wales Slate website explains.
However, there are still a number of walking paths over and through the abandoned slate quarry.
The “lost world” hidden deep within abandoned Dinorwig Quarry
Social media is full of videos of people venturing through the abandoned Dinorwig Slate Quarry.
While several people have stumbled across a “lost world” which is nestled deep in the UNESCO World Heritage site.
One TikTok user posted a video of the hidden area saying: “Lost world in North Wales. Feeling like I’m in some movie, where I’m going on this wild ‘snakes and ladders’ route—climbing rock walls with rusty old ladders and venturing into Jurassic Park through the tunnels.”
@heykeyt Lost world in North Wales 👇🏼 Feeling like I’m in some movie, where I’m going on this wild ‘snakes and ladders’ route—climbing rock walls with rusty old ladders and venturing into Jurassic Park through the tunnels. 📍 Dinorwig Quarry 👉🏼 Explore the Welsh landscape sculpted by centuries of slate mining, 👉🏼 A once bustling mine, looms above lake Padarn. #uktravel #walesadventure #visitwales #Uktravelblogger #ukhiddengems #snowdonianationalpark #llanberis #dinorwicquarry ♬ Brutus (Instrumental) – The Buttress
The video has been viewed more than 1.2 million times and received over 72,000 likes.
Another explorer posting about the “hidden treasure” said: “Nestled deep in a quarry in north Wales lays this beautiful hidden treasure.
“Not the easiest to find but worth the hike. Follow the trail through the abandoned dinorwic quarry, alongside the most beautiful lake and scenic backdrop.
“Head higher up the slate quarry and find the secret tunnel that hides this hidden paradise on the other side.”
@tomharborne ʜɪᴅᴅᴇɴ ᴘᴀʀᴀᴅɪꜱᴇ Nestled deep in a quarry in north Wales lays this beautiful hidden treasure. Not the easiest to find but worth the hike. Follow the trail through the abandoned dinorwic quarry, alongside the most beautiful lake and scenic backdrop. Head higher up the slate quarry and find the secret tunnel that hides this hidden paradise on the other side. #dinorwicquarry #hiddenwaterfall #secretgem #abandoned #tropical #paradise #travelwithme #northwales ♬ Jungle Sound for relaxing – Kopi Senja
The hidden area has a walking path around a slight drop, with a waterfall running down it.
WARNING: Some Dinorwig Quarry tracks are dangerous or located on private land
Wales Slate has issued a warning to anyone planning a walk around Dinorwig Quarry.
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Its website reads: “The Slate Landscape of Northwest Wales is undoubtedly fascinating, but by it’s [sic] very nature can be remote, dangerous and challenging.
“A significant proportion of the landscape is within private ownership and some of this on land where no public access is permitted.
“Before you set off to explore the slate landscape, ask yourself, am I allowed to access this site?
“Do I have the right gear? Do I know what the weather will be like? Do I have the knowledge and skills for the day?”
