De-Graft: I’m in Wales, finding out about the country’s tallest mountain - Snowdon. It takes a good few hours to walk up and down it. But thankfully there’s a train you can catch too.

Everyone likes a challenge and getting to the top of a mountain in this weather must be one of the most breathtaking in more waysthan one. My name's Seren and today I'm exploring the UK's tallest ...