For most people their tattoos mark the ups and downs of their lives. But for one Welsh rollercoaster fanatic his latest bit of ink charts the twists and turns of his favourite roller coaster; Oakwood's Megafobia.

Mark Lewis has had a tattoo of Oakwood Theme Park's iconic wooden rollercoaster Megafobia to celebrate his long association with the ride.

The 45-year-old, was one of the first people to experience the ride when it opened in 1996.

"I can remember my first ride on Megafobia like it was yesterday," said Mark. "I was one row from the back. I was blown away by how amazing this ride was, and so happy that we had this in Wales."

Earlier this year Mark recorded his 4,175th ride on the wooden coaster, which has been voted the third best ride in the world by coaster enthusiasts from the Roller Coaster Club of Great Britain.

He also holds the record for the most Megafobia rides in one day; set in 1996 and still unbeaten the total stands at178.

He has used his love of rollercoasters to raise thousands of pounds for hospital charities and last year spent 40 hours on Megafobia over a five-day period to raise money for Great Ormond Street. The Hospital provided care to his son in the months after he was born.

"After last year's 40-hour charity rideathon I decided to get a special tattoo to mark the occasion and celebrate my ongoing love affair with Megafobia," said Mark.

His Megafobia masterpiece was created by Kylie Talbot at Gypsy Jayne's Tattoo Studio.

"After several hours of discomfort it was finished and I am over the moon with the result!" said Mark, from Ebbw Vale .

"Over the last 19 years Oakwood Theme Park has been amazing to me, and Megafobia is just as good today as it was back when it open in 1996, and I love it," he said.