Pam Maybank and Frances Minett, who both remember the Aberfan disaster which decimated the village, say they fear for the future of the memorial playground. It was opened by the Queen in the 1970s. She will return on her Jubilee tour next month, but will see some of the equipment has been removed.
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The world record attempt will raise money for the foundation set up in memory of the Olympic gold medallist, who died in May 2013.
In today's Newsweek, Carl talks about what the 'No' vote in the Scottish Referendum could mean for Wales and the impact of legal highs.
England manager talent spotting at Swansea City v Southampton at the Liberty Stadium