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Garn Road Powder House is a post-medieval and modern explosives magazine situated 300 metres east-north-east of Ashgrove Bungalow in Wales. The structure was built to store gunpowder or other explosive materials during a period when such facilities became increasingly necessary for mining, quarrying and industrial operations across the South Wales coalfield. The underlying Pennine and South Wales Middle Coal Measures, comprising mudstone, siltstone, sandstone and coal seams, made this region a centre of intensive mineral extraction from the 18th century onwards, and magazines like this one were essential infrastructure supporting those industries.
The site occupies ground above the coal-bearing strata that would have driven local economic activity. Such magazines were typically constructed with thick walls and robust design to contain accidental explosions and protect surrounding communities. Their remote or semi-isolated siting, as evidenced here, followed established safety practice for the period.
The monument is protected by Cadw under reference MM357, recognising its significance as a surviving example of industrial-era explosives storage infrastructure in the Welsh coalfields.
Garn Road Powder House 300m ENE of Ashgrove Bungalow is a scheduled monument protected by Cadw under reference MM357. View the official record →
Garn Road Powder House is a post-medieval and modern explosives magazine situated 300 metres east-north-east of Ashgrove Bungalow in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference MM357.
Garn Road Powder House 300m ENE of Ashgrove Bungalow dates from the post medieval/modern period, and is classified as a magazine. It is one of over 32,000 scheduled monuments protected across the UK.
Garn Road Powder House 300m ENE of Ashgrove Bungalow 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 MM357.
Several scheduled monuments lie within 10 km, including Aaron Brute's Level and Iron Bridge (0.8 km), Coity Sandstone Quarry and Incline (1.9 km), Capel Newydd, Blaenavon (site of) (3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Garn Road Powder House 300m ENE of Ashgrove Bungalow'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.
Garn Road Powder House 300m ENE of Ashgrove Bungalow stands on Pennine Middle Coal Measures Formation And South Wales Middle Coal Measures Formation (Undifferentiated), bedrock that formed in the Moscovian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.