The Cycle Track to England?

We got to Dublin yesterday morning and had a bit of a cold walk around.  The boys managed to stay awake to around 3:00pm before they crashed, so Heather and I crashed as well a little later.

Today we started fairly early and headed south to Booterstown and started suburb-hopping southwards.  In Dun Laoghaire we went for a long walk and found this path apparently heading straight into the sea, which I figure must be for properly equipped cyclists to attempt the journey to Holyhead, though there were no signs to that effect so perhaps I am wrong.

dublin   dunlaoghaire   path   rocks   sea   d800   ccby