Cornwall Heritage Trust

‘First Signs of Spring’ Ranger Ramble
2026-02-17 10:00 - 11:00 (Europe/London) | Treffry Viaduct, Treffry Viaduct, Par, PL26 8YE, United Kingdom
Be taken on a journey through the historic, cultural and folkloric significance of springtime flora and fauna in the Luxulyan Valley surrounding Treffry Viaduct.
Location: Treffry Viaduct, St Austell, PL26 8YE – What3Words: ///routs.overhaul.indicate
Meeting Point: Black Hill Car Park, Luxulyan, St Austell, PL26 8YE – What3Words: ///coverings.shots.sticks
Price: £10
Learn about the rich tapestry of tales and traditions associated with the signs of the season in Cornwall and explore the enchanting stories that places like this have inspired across the centuries.
The walk will be led by Cornwall Heritage Trust’s Countryside Ranger, Andrew.
Located near St Austell, this 19th-century viaduct was designed to carry both a tramway and a high-level water channel (known as a leat) across the Luxulyan Valley for local mining entrepreneur Joseph Thomas Treffry. Once a hive of industrial activity, the site has very much been reclaimed by nature and is home to a wealth of flora, fauna and historic remains.
The walk involves uneven ground, steps and slopes. Please wear sensible footwear and appropriate clothing.
Places are limited and will be allocated on a first-come-first-served basis.
This event is in aid of Cornwall Heritage Trust.

Getting there
The site can be reached by car or by train via Luxulyan train station, on the Atlantic Coast railway branch line between Par and Newquay.
Parking
Limited parking is available in the Black Hill Car Park (named Luxulyan Valley Car Park on Google Maps). It is located here ///coverings.shots.sticks
What to wear
The walk involves uneven ground, steps and slopes. Sensible footwear and appropriate clothing are advised for potentially wet and muddy conditions.

Rescheduled - Trig Points and Tregonning Hill Guided Walk
2026-07-25 15:00 - 17:30 | Tregonning Hill, Tregonning Hill, Helston, TR13 9TE, United Kingdom
Due to unforeseen circumstances, this event has been rescheduled and is now taking place in July. For those already booked onto this event, please check your email for further updates. Thank you.
April 2026 marks 90 years since trig pillars were first used in the retriangulation of Great Britain. To celebrate, join us for a guided walk to a primary trig point on Tregonning Hill, exploring this hill’s role in early modern mapping and its much older history as a place of settlement and defence.
Date: Saturday 25th July (rescheduled date)
Time: 3.00pm – 5.30pm
Location: Tregonning Hill, Balwest, Helston, TR13 9TE – What3Words: ///grain.surpasses.good
Meeting point: Balwest Chapel Car Park, TR13 9TE – What3Words: ///perkily.table.dolls

Price: £10 per person
Trig points were positioned so they could be clearly seen from one another. From Tregonning Hill, there is a direct sight-line to a trig point on Castle an Dinas (West), another important site in Cornwall Heritage Trust’s care.
If the weather is clear, we should be able to see this concrete pillar. These inter-visible sites would have worked together to help Ordnance Survey surveyors create accurate maps of the surrounding landscape.
Along the walk, we’ll consider how trig pillars were used, why Tregonning was chosen as a survey site, and how the hill has been important for thousands of years, including during prehistory when it was used for its long-distance visibility.
The walk will be led by Cornwall Heritage Trust’s Sites Project Manager, Carolyn Kennett.

Accessibility and terrain
The route is on established paths, however there is rough, uneven ground with steep sections. Sturdy footwear and appropriate clothing are essential.
There is a toilet available near the site.

This event is in aid of Cornwall Heritage Trust – the independent charity protecting Cornwall’s heritage for everyone.
