Scheduled MonumentsWalesCrymlyn Bog Second World War Barrage Balloon Site
Modern · Barrage Balloon Site

Crymlyn Bog Second World War Barrage Balloon Site

Wales
Cadw SAM GM636
Period
Modern
Site type
Barrage Balloon Site
Broad class
Defence
Nation
Wales
Boundary

Scheduled area

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Overview

History & significance

Crymlyn Bog Second World War Barrage Balloon Site is a Modern Defence installation located in Wales, designated as Scheduled Ancient Monument GM636. The site dates from the Second World War period when barrage balloons were deployed as aerial defence measures against low-flying enemy aircraft. Crymlyn Bog's location in the industrial landscape of South Wales made it a strategically important position for such defensive infrastructure, protecting nearby towns and industrial facilities from air attack. The physical remains at the site reflect the temporary yet purposeful nature of wartime defences, documenting a significant aspect of Wales's home front experience during 1939–1945.

Crymlyn Bog Second World War Barrage Balloon Site is a scheduled monument protected by Cadw under reference GM636. View the official record →

About this monument

Questions & answers

What is Crymlyn Bog Second World War Barrage Balloon Site?

Crymlyn Bog Second World War Barrage Balloon Site is a Modern Defence installation located in Wales, designated as Scheduled Ancient Monument GM636. It is designated a Scheduled Ancient Monument by Cadw under reference GM636.

What period does Crymlyn Bog Second World War Barrage Balloon Site date from?

Crymlyn Bog Second World War Barrage Balloon Site dates from the modern period, and is classified as a barrage balloon site. It is one of over 32,000 scheduled monuments protected across Britain.

Who is responsible for protecting Crymlyn Bog Second World War Barrage Balloon Site?

Crymlyn Bog Second World War Barrage Balloon Site 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 GM636.

What other scheduled monuments are near Crymlyn Bog Second World War Barrage Balloon Site?

Several scheduled monuments lie within 10 km, including Tir-Gwyllt Second World War Barrage Balloon Site (0.7 km), Earthwork on Kilvey Hill (1.4 km), St Margaret's Chapel (1.8 km).

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