Mewn munud wan - ac un o fy 50 cyn 50 - dwi wedi penderfynu cymryd rhan yn hwn ac abseilio i lawr Tŵr Marcwis. Dwi erioed wedi abseilio o'r blaen, a mae'r Tŵr yn uchel iawn... Dwi'n codi arian ar gyfer Tŷ Gobaith, elusen bwysig, felly cyfrannwch yn helaeth!

In a moment of insanity - and as one of my 50 before 50 - I have decided to take part in this and abseil down the Marquess' Column. I have never abseiled before, and the tower is very high... I am raising money for Tŷ Gobaith, an important charity, so please give generously!