Lantonside is an Antonine-period Roman fortlet on the north shore of the Solway Firth, near the mouth of the River Nith in Dumfriesshire. It forms part of a chain of small outpost installations watching the Solway crossings, likely active during the mid-2nd century AD when the Antonine Wall to the north was operational (c. AD 142–160s), functioning as a coastal observation and signalling post rather than a garrison fort.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
The site is significant as evidence that the Roman military controlled both shores of the Solway, extending the surveillance system of the Cumbrian coast (the "Western Sea Defences") northwards into south-west Scotland and guarding the approach to the Nith estuary and the route inland toward Dalswinton. It complements similar small posts such as those identified along the Solway and reinforces the picture of an integrated frontier system facing the Novantae and policing maritime traffic.
The fortlet was identified primarily through aerial photography, showing the cropmark of a small rectangular enclosure with ditches; no major excavation has been published, and finds are correspondingly sparse. Its Roman attribution and Antonine date rest largely on morphological comparison with better-investigated fortlets of the period rather than stratified dating evidence from the site itself.
Lantonside is an Antonine-period Roman fortlet on the north shore of the Solway Firth, near the mouth of the River Nith in Dumfriesshire. It is recorded in the Pleiades gazetteer of ancient places as a fortlet site from the Roman period in Britain.
Lantonside is classified as a Roman fortlet — a military site in the Pleiades ancient world gazetteer. Roman Britain's archaeology encompasses thousands of sites ranging from legionary fortresses and marching camps to villas, temples and towns.
Several Roman sites lie within a short distance, including Ward Law (1.5 km), Skinburness (15.5 km), Palisade ditches, part of Roman frontier defences along Cumbrian coast, Roman camp & road and part of Romano-British field system, 250m north of Silloth Farm (15.7 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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