Keep away from the edge, said no one. It’s a long way down, is the wall there to stop you? No, the wall is there to stop the cows falling over the edge, they are worth a lot of money, we can’t have them falling (the footpath is outside the wall). This is the western edge of Ireland, next stop America.
The Cliffs of Moher have to be seen to be believed, most things in Ireland are quite small in scale, but these cliffs are quite dramatic. There is a visitor’s centre, as part of the Wild Atlantic Way, you can walk along the edge but go prepared. You can go by bike, but I wouldn’t recommend it, the wind comes over the edge and tries to lift you like a kite (even on a good day).