Waterloo Bay, Protected geological area in Larne, Northern Ireland
The foreshore of Waterloo Bay displays rock layers from the late Triassic to early Jurassic periods, spanning 10 million years of geological history.
In 1843, Joseph Ellison Portlock conducted the first scientific study of the Triassic and Jurassic rocks while working for Ordnance Survey Ireland.
The discovery of an ichthyosaur fossil in 1999 led to its exhibition at the Ulster Museum, where visitors learn about Northern Ireland's marine past.
Free parking is available at Larne Leisure Centre, and the geological features are best observed during low tide from the public promenade.
The rock formations contain abundant ammonite fossils in the mudstone, with Psiloceras planorbis marking the precise Jurassic boundary.
Location: Larne
GPS coordinates: 54.85200,-5.83000
Latest update: March 3, 2025 09:57
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