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Stack Rock Fort is a mid-nineteenth-century coastal defence fortification located on an isolated rock stack in Milford Haven, Pembrokeshire. Built between 1850 and 1852 as part of the wider programme of Victorian coastal fortifications, the fort was designed to protect the strategic naval anchorage and industrial importance of Milford Haven from potential enemy attack during the period of imperial naval dominance. The structure comprises a circular gun battery constructed from sandstone, originally equipped with artillery positions arranged to command the approaches to the haven. Now ruinous and abandoned, the fort stands as a testament to nineteenth-century military engineering and reflects the strategic priorities of Britain during the mid-Victorian era.
Stack Rock Fort is a scheduled monument protected by Cadw under reference PE334. View the official record →
Stack Rock Fort is a mid-nineteenth-century coastal defence fortification located on an isolated rock stack in Milford Haven, Pembrokeshire. It is designated a Scheduled Ancient Monument by Cadw under reference PE334.
Stack Rock Fort dates from the post medieval/modern period, and is classified as a fort. It is one of over 32,000 scheduled monuments protected across the UK.
Stack Rock Fort is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is PE334.
Several scheduled monuments lie within 10 km, including Gravel Bay anti-aircraft battery (4.5 km), Devil's Quoit Burial Chamber (4.7 km), Crow Back Tumulus (7.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Stack Rock Fort's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Stack Rock Fort stands on Devonian claystone, bedrock that formed in the Carboniferous. The rock here is major:{claystone}, Minor{sandstone,siltstone,carbonates, consolidated}.