Members of the public have been urged to steer clear of the old public toilets in Portrane after coastal erosion took another chunk out of the shoreline.
The toilets along with the anchor foundation stone have been cordoned off and officials are warning people to avoid the dunes on Burrow Beach.
Violent storms have accelerated the serious issue of coastal erosion in the seaside village where some properties are teetering on the verge of collapse into the sea.
Storm force winds and strong tidal surges shifted the ground around the disused toilets and foundation stone on which the RMS Tayleur commemorative monument was located until it was moved to safer location.
Arrangements to secure the two sites are being made by the council’s operations department and both structures will be removed as soon as possible.
Cllr Adrian Henchy (FF) said he was monitoring the “ongoing and rapidly deteriorating” situation along the Portrane coastline.
He added: “Obviously short term measures are required as a matter of urgency and the work to deliver a permanent solution needs to continue at an even quicker pace.
“All the Seabees are doing is providing emergency protection in order to provide the time needed to get planning approval for the more long lasting solution.”
Sections of the dunes along Burrow Beach have been eroded and are potentially unstable and at risk of collapse, according to the council.
It says both the toilets and the dunes are considered to be dangerous in the context of the Sanitary Services Act.
Fingal County Council says it is working in collaboration with the Office of Public Works (OPW) and The National Parks and Wildlife Service (NPWS), to examine options to address coastal flooding and erosion in Portrane and Rush.
Expert engineers have prepared a plan outlining the options for addressing coastal flood risk management in the Rogerstown Estuary.
In recent weeks over 800 invitations have been issued to property owners in Portrane and Rush inviting them to presentations of the report which will commence in September in accordance with public health guidelines.