Even though it means having to put scaffolding around the towers at Castell Coch during the height of the summer season, Neal O’Leary and his team of experts have little choice.
Er fod hynny’n golygu gosod sgaffaldau o amgylch tŵr Castell Coch yn anterth tymor yr haf, roedd penderfyniad Neal O’Leary a’i dîm yn anorfod.