Milverton is a working quarry, not a visitor attraction. It sits just outside Skerries on the north County Dublin coast, owned and worked by Roadstone, and since 2017 it has been slowly filled back in with inert stone and soil under a licence allowing up to 400,000 tonnes a year. Fingal County Council is blunt about it: the site is ‘not suitable for general public access’. Machinery runs on and off, some of the drops are unfenced, and at busy times up to 26 lorries an hour come and go. Treat what follows as background on a place you will mostly see from the road, not an invitation to walk in.
The geology
Milverton is a County Geological Site. The quarry cuts into Lower Carboniferous (Viséan) limestone and shale of the Holmpatrick Formation – thick-bedded to massive limestone laid down when this coast lay beneath a warm, shallow sea. The bedding is best appreciated from a safe distance along the rim; the working faces themselves are off limits.
The lime-kilns
Two masonry lime-kilns, each about 25 feet square and 30 feet high, survive from the days when broken limestone and coal were burned here to make quicklime for farming, building and sanitation. Lime-burning stopped long ago; stone extraction carried on. The kilns are the most tangible link to the site’s working past.
Peregrine falcons
A pair of peregrine falcons – among the fastest birds alive, and given the highest legal protection under Irish and EU law – nest in the quarry. The infilling operation has drawn local concern about the effect on them and other wildlife. If you want to watch, do it from well back with binoculars and stay clear of the upper ledges; don’t approach.
Getting there and what’s nearby
The quarry is reached off the R127 near Skerries, and the nearest place to leave a car is the Harbour Road car park in Skerries; the town is on the Dublin–Drogheda rail line. Honestly, the reason to be in this corner of the coast is Skerries itself, not the quarry: the harbour, the coast path and the windmills. If you want a proper walk, Burrow Beach and the Black Linn Loop on Howth Head, or the promenade at Balbriggan a few kilometres north, all beat peering over a quarry fence.