Fifteen of the caches are at the coordinates given for them. You need to record the number inside the lid of each cache to find the coordinates to a 16th cache (GC6NN4W) that contains a special geocoin for the FTF, featuring something else that Island Bay is famous for.
The coordinates for the 16th cache are South ABo CD.EFG East HIJo KL.MNO, where A is the number inside the lid of River Roads #1 – Dee Street, B is the number inside the lid of River Roads #2 – Tamar Street and so on up to O, which is inside the lid of River Roads #15 – Severn Street.
Liffey Crescent
Liffey Crescent is named after the River Liffey (Irish: An Life), a river in Ireland, which flows through the centre of Dublin. Its major tributaries include the River Dodder, the River Poddle and the River Camac. The river supplies much of Dublin's water, and a range of recreational opportunities.
The Liffey rises in the Liffey Head Bog between Kippure and Tonduff in the Wicklow Mountains, forming from many streamlets at Sally Gap. It flows for 132 km (82 mi) through counties Wicklow, Kildare and Dublin before entering the Irish Sea at its mouth at the midpoint of Dublin Bay, on a line extending from the Baily lighthouse to the Muglin Rocks. It crosses from County Wicklow into County Kildare at Poulaphouca and from County Kildare into County Dublin at Leixlip, with most of its length being in Kildare.
The cache
This is a straightforward park ‘n’ grab, but is in a residential area, so please respect the residents’ privacy and be discreet. It’s on public land, so there’s no need to enter any private property. Bring your own pen or pencil.
You are looking for a black camoed plastic pill container. Please replace it exactly as you found it and do please log a DNF if you can’t find it. There’s no shame in a DNF! This is particularly important, as this is a series of caches in which all need to be active for finders to locate the final cache.