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Lock 12, the Island is a canal lock forming part of the Lagan Navigation, an eighteenth-century waterway that once connected Belfast to Lisburn and beyond. The lock sits upon bedrock of the Belfast Group, a Late Permian formation of interbedded sandstone and limestone that characterises the underlying geology of this stretch of the Lagan valley. The lock is situated on the island, an artificial feature created by the canal's engineers to control water flow and navigation through this section of the river.
The Lagan Navigation was constructed to facilitate commercial transport during the industrial expansion of the region, allowing goods and raw materials to move between the growing towns and industrial centres of County Antrim. Lock 12 represents the engineering skill applied to managing the river's natural gradient and water levels across the navigation's length. The monument survives as physical evidence of eighteenth-century civil engineering and the economic importance of water transport to the region.
The site is protected by the Historic Environment Division of Northern Ireland under reference 5162, recognising its significance as an integral component of the Lagan Navigation heritage. The lock, together with other structures along the waterway, preserves the technological and commercial history of industrial-era transport infrastructure in east Ulster.
Lock 12, the island. canal lock, part of the lagan navigation - c.f. ihr 2680 is a scheduled monument protected by Department for Communities NI under reference 5162. View the official record →
Lock 12, the Island is a canal lock forming part of the Lagan Navigation, an eighteenth-century waterway that once connected Belfast to Lisburn and beyond. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 5162.
Lock 12, the island. canal lock, part of the lagan navigation - c.f. ihr 2680 dates from the c18th period, and is classified as a canal. It is one of over 32,000 scheduled monuments protected across the UK.
Lock 12, the island. canal lock, part of the lagan navigation - c.f. ihr 2680 is a Scheduled Ancient Monument, legally protected by DfC Northern Ireland (NISMR) — the body responsible for designating and safeguarding heritage sites in Ni. The official designation reference is 5162.
Several scheduled monuments lie within 10 km, including Wwii air raid shelter (0.3 km), Ballintine rath. rath (1.8 km), Raised rath (1.8 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Lock 12, the island. canal lock, part of the lagan navigation - c.f. ihr 2680'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.
Lock 12, the island. canal lock, part of the lagan navigation - c.f. ihr 2680 stands on Belfast Group, bedrock that formed in the Late Permian. The rock here is sandstone and [subequal/subordinate] limestone, interbedded.