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Divers have filmed a stunning video of some of their trips to a disused quarry where the water reaches depths of up to 100m.

Graham Owen and Artur Jablonski filmed their dive in Dorothea Quarry, in the Nantlle Valley in Gwynedd over several trips during the autumn.

The video shows them swimming in murky green and dark waters, swimming among abandoned cars and slate caverns.

Graham, who is blind and can only make out the difference between light and dark, has been diving for around 12 years.

After being diagnosed with a deteriorating eye condition in 2001, his sight eventually got worse and now he can only make out light and dark.

He decided to take up diving in 2004 to try and fill up the gaps as he could no longer enjoy his old hobbies, reading, cycling and fishing.

Graham, who makes the four and a half hour-journey each way from north Yorkshire to Dorothea Quarry when weather doesn’t allow him to go sea diving, tries to go diving every week – sometimes with club 50mPlusDivers and also on his own.

They make it a tradition to stop either at Junction 39 on the A55 or at Colwyn Bay for breakfast on the way.

His first 100m dive was at Dorothea in 2007, so when Artur said he wanted to dive down further than the 90m he had already been to, Graham decided to take on the role of being his guide.

And Artur decided to film what they saw.

Graham said: “I use it for preparation for diving in the sea and deep sea diving. I’ve been to Dorothea probably too many times – I’ve been there hundreds of times.

“I’ve dived most parts of the quarry. There’s still a couple of bits I haven’t explored as much as I could do.

“To explore it all you’ve got to cover an awful lot of ground.

On the long trips to the quarry, Graham, who lives with wife Tracy and guide dog Gypsy, said: “I can only comment on the beautiful scenery my friends tell me about.

“Although I’m blind I know that area of the quarry reasonably well. I’ve done quite a few dives with him since. I’ve been acting as a bit of a guide.

“I can tell the difference between light and dark. I carry quite a few lights with me – it’s pretty simple.

“I can usually find my way around. I love diving. That’s why I dive every week.”

Graham, who works for the Royal British Legion, says he mostly dives in the UK because diving in clear blue seas mean there is no contrast in light for him.

He said: “Diving in clear blue water is not all that good for me. There’s no difference between light and dark.

“Diving off the North Sea or Anglesey, it’s dark to green water. That means I can use torches and make out light.

“It’s easier for me.”