Biking through a muddy bog wearing lead weights isn't exactly what most people like to do with their weekends.
But for some people the World Mountain Bike Bog Snorkelling Championships is a must-do event.
In the Powys town of Llanwrtyd Wells, cyclists ride along the bottom of a 6ft deep peat bog wearing a mask and snorkel. Not my idea of fun I have to say.
Competitors first added a mountain bike to the bog-snorkelling proceedings in 2005 and it has been growing in popularity ever since. Those who accept the challenge use a bike prepared with a lead-filled frame and water-filled tyres to ensure grip on the pond bottom. A far cry from saving a few grams here and there on a road bike.
And talking of road bikes, it's time I got out on mine.
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