A scheduled fort west of the village introduces a prehistoric defensive layer to Auchencairn’s immediate landscape, though its legacy record is deliberately sparse.
Quick facts
- Date
- Prehistoric; a narrower period is not established by the checked designation
- Architect / designer
- Unknown prehistoric builders
- Type
- Fortified archaeological site
- Designation
- Scheduled monument (SM1103)
- OS grid reference
- NX 78961 51566
Architecture and continuing use
The current national designation classifies the site as a prehistoric domestic and defensive fort and supplies a precise mapped point. Its public record does not provide a detailed description of banks, ditches, internal features or excavated fabric, so the monument is presented as an archaeological place rather than reconstructed in unsupported detail.
Its story
The fort’s date, builders and sequence are not securely defined in the checked public designation. It was scheduled in October 1937, and supplementary information was updated in May 2018. Its inclusion here rests on legal designation, classification and close landscape relationship to Auchencairn, not on an invented narrative.
Why it is included
It extends the Place beyond post-medieval Main Street architecture and makes visible the much longer history of settlement and defence in the surrounding ground.
What to notice
- The relationship between higher ground and surrounding approaches.
- Any subtle changes of slope visible without leaving lawful routes.
- The fort’s position relative to Collin Mill Bridge and Auchencairn.
Reading the surroundings
No public right of entry or managed path has been confirmed. Do not cross private land, climb fences, disturb earthworks or rely on the map marker as proof of safe access.
Timeline
- Prehistoric period A defended site was established in the landscape west of present-day Auchencairn.
- 7 October 1937 The fort received statutory protection as a scheduled monument.
- 28 May 2018 Supplementary information in the national designation was updated.
What we know — and what remains uncertain
The schedule confirms identity, classification and position but not a precise period, plan or excavation history. Those limits are part of the record and should not be filled by conjecture.
Sources & further reading
- Historic Environment Scotland: Collin Mill Bridge Fort, SM1103 — Current designation status, official mapped location, date, fabric and significance.
- Ancient Monuments: Collin Mill Bridge fort — Independent presentation of the HES schedule identity, prehistoric fort classification and mapped location.
- Trove search: Collin Mill Bridge Fort — National collection search for site records, surveys, photographs and archive material.
Location
OS grid reference NX 78961 51566 · Location confidence: High for the current national designation point; public text separately states access, component-identity and current-use uncertainty. · Select the marker to open its satellite view in Google Maps. On desktop, drag Pegman (the yellow figure) onto a blue road. On mobile, turn on the Street View layer and tap a blue road. Other photo markers may be user-contributed.
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Suggest a more accurate position
The teal marker is the current published position. The orange marker starts slightly to its right so both remain visible; this is only a visual starting position. Tap the correct place on the map or drag the orange marker. Sending this form creates a private review entry only; it does not move the published marker.
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Map: © OpenStreetMap contributors. You can also enter checked coordinates below.