The plans, which are being discussed today, would see the faces of coach Warren Gatland and heroic captain Alun Wyn Jones carved into the cliffs of Flat Holm island.

The carvings, which will tower 100 feet high, are the brainchild of Wales-based Korean sculptor Li Ar and are expected to be a major draw for visitors.

Sculptor, Li Ar, said:  "I was at Mount Rushmore a few years back and ever since I've dreamed of doing something like that here in Wales.  I was already talking to the council about maybe doing something out on Flat Holm with music, legends like Tom Jones, Shirley Bassey, Duffy, that sort of thing, but then it hit me, it must have been a few hours after the game and I won't lie, I'd had a few, but I thought why not make it Warren and the boys?

"My family moved here from South Korea when I was three years old, and my Dad really got into Rugby.  But I remember going to Flat Holm with school and thinking, what's the point?  It's just loads of birds, a lighthouse, old ruins.  History and nature were never my thing.  But something like this, I'd have been sold, and I hope lots of visitors will feel the same when they see it."

Cllr Josh Ing, Chair of the Committee for Bright Ideas said:  "Winning the Grand Slam is an inspirational achievement and we hope that this unique ‘Mount Rushmore' homage to the team will be another fantastic tourist attraction for visitors to Cardiff Bay.

"This initial investment will put Flat Holm island on the cultural and sporting map and if successful we'll be looking to add more faces to the monument, both for future Grand Slam winners but also to honour rugby legends of the past such as Sir Gareth Edwards, JPR and Barry John."

Work on the monument is expected to be finished by April 1, 2020.