A steep slate-built incline and its road arch are the strongest surviving structural evidence of the transport system that linked Ballachulish’s quarries to Loch Leven.
Quick facts
- Date
- Probably 1822; used through the nineteenth-century quarry era
- Architect / designer
- Engineer and builders not securely recorded in the accessible sources
- Type
- Stone-built quarry incline with road arch
- Designation
- Scheduled monument (SM6051)
- OS grid reference
- NN 08569 58530
Architecture and continuing use
Slate flagstone and mortared rubble form a raised plane climbing the side of Tom Beag at about twenty-five degrees. Near the foot, a segmental arch once carried the incline above the public road. Wagons of dressed slate descended towards the piers while empty vehicles returned uphill. Much of the wider industrial complex was landscaped, leaving this substantial linear structure unusually prominent.
Its story
A conservation survey records the incline as constructed in 1822 and known locally as Glaic-an-Tobair. It became one of six planes serving mechanised quarry transport during the nineteenth century. Production declined in the early twentieth century, resumed after the First World War and ended in 1955. Scheduling followed in 1994. A publicly funded conservation and interpretation project began in 2015 under Highland Council ownership.
Why it is included
It is a rare surviving machine-landscape: fixed stonework made gravity and wagon transport part of the architecture of a nationally important industry.
What to notice
- The incline’s direct climb towards the former working levels.
- The segmental arch that separated wagons from road traffic.
- Slate construction used at engineering rather than domestic scale.
Reading the surroundings
Follow the maintained visitor route and all barriers. Keep away from quarry water, drops, loose slate and the top of the structure; do not climb the arch or treat conservation access as permission to enter closed workings.
Timeline
- 1822 The Tom Beag incline was reportedly constructed for quarry wagons.
- 19th century Loaded slate descended to lochside transport while empty wagons returned uphill.
- 1955 Commercial quarrying at Ballachulish finally ceased.
- 2015 A conservation and interpretation project began with council and community partners.
What we know — and what remains uncertain
The HES page describes a mid-nineteenth-century structure while a later conservation report gives 1822; this record therefore treats the earlier year as probable rather than certain. Path access can change for safety works.
Sources & further reading
- Historic Environment Scotland: Tom Beag Inclined Plane, SM6051 — Current designation status, statutory identity, official mapped point, date, fabric and significance.
- National Lottery Heritage Fund: Ballachulish slate arch project — Public-funder evidence for council ownership, conservation, interpretation and path improvements at the inclined plane.
- Trove: Tom Beag inclined plane — National heritage inventory entry for designation identity, mapped position, related records and available archive material.
- Highland Historic Environment Record: Tom Beag — Local record for the protected quarry structure, conservation history and mapped location.
Location
OS grid reference NN 08569 58530 · Location confidence: High for the current HES designation point; public text separately qualifies access, component identity and any mapped-area or location 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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