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Belfast to Beijing: YouTube video of Irish waterfall is global hit

Beneath a wooden footbridge on the River Bonet in County Leitrim, a small waterfall makes a noisy sound.

It rushes along, cascading down rocks, breaking the wild silence of the rural countryside.

It is a scene featured in a YouTube video that is now helping millions of insomnia sufferers, from Belfast to Beijing, who are struggling to sleep.

The eight-hour footage has been viewed over six million times and is now part of medical research used in several London hospitals as part of a clinical trial.

The man behind the video is visual artist Johnnie Lawson from County Leitrim.