Canadian daredevil photographer took stunning images of frozen waterfalls during ice climbing.
Climbing heights ranging from 40 to a few hundred feet, these courageous climbers scale frozen waterfalls in Canada, despite the ice threatening to collapse beneath them.
These amazing photographs were captured by Canadian outdoor adventure photographer Alain Denis, 41, after he decided to explore the frozen waterfalls in the Laurentian mountain area in Quebec, Canada - with a little help from some of his friends.
Mr Denis, of Adele, Quebec, said: 'Ice climbing is a different challenge than warm summer rock climbing, as you have to deal with the cold weather, lots of clothes and gear.
'As the ice gets thicker over the season, it's continuously changing, creating new challenges.
'Ice can change a lot with temperatures, when it's very cold the ice becomes brittle and small layers can fall off.
'A major thing to watch out for is hanging daggers, the big curtains of ice that usually form over an overhanging wall.
Climbing the waterfalls can cause pain and many scary moments, but the beauty of the amazing landscape is worth it all.
'Photographing them is pure fun, although sometimes it can get pretty cold, especially your fingers!"
Climbing up waterfalls anywhere from three to 150 feet wide, Mr Denis climbs and photographs the waterfalls in temperatures up to -15 degrees.
As a climber of 21 years, Mr Denis decided to buy a camera to document his trips, and travels the world visiting new climbing areas.
'I sometimes walk around the waterfall before the climb to find the angle I want.
'Normally the ice season will start mid to end of December, depending on how cold it is, and can last until mid-March.
'"Wow" is the most common response I get from the public.
'Most Ice climbs are very spectacular because of the formations and color of the ice.'