Llyn Fach Fencing and Cattle Handling Pen

Executive Summary

In November 2022, Enviroculture installed approximately 400 metres of livestock fencing and a new cattle handling pen at Llyn Fach for the Wildlife Trust of South and West Wales. The works enable targeted conservation grazing to protect sensitive habitats, with the design developed to suit the site’s forestry track setting and SSSI constraints. Despite working on extremely hard shale ground with restricted access and frequent direction changes, the project was completed safely, to specification, and on time.

About the Client

The Wildlife Trust of South and West Wales (WTSWW) manages Llyn Fach in partnership with Natural Resources Wales (NRW) as part of the Welsh Government Woodland Estate. The site is designated as a Site of Special Scientific Interest (SSSI) and supports priority habitats that benefit from well-managed grazing.

The Challenge

The fencing and pen were to be installed predominantly along a made-up forest track with culverts and frequent direction changes. The ground conditions presented a significant challenge due to a heavy build-up of large shale and compacted stone beneath the surface, making post installation extremely difficult.

Access to the site was also restricted, located at a remote elevation requiring coordination with Zip World to obtain keys and permissions for access through their network. The project needed to be completed by late November while maintaining access, minimising disturbance, and ensuring full compliance with SSSI, NRW, and UKWAS standards.

The Solution

Enviroculture deployed a tractor-mounted post knocker fitted with a rock spike to drive posts through the dense shale substrate. This method allowed for precise installation while maintaining a low-impact approach suitable for the sensitive site. The team also used an ATV for material transport, enabling efficient logistics across the steep and confined track network.

In line with the Wildlife Trust’s preference for durable and low-maintenance fencing systems, a Clipex-style specification was adopted, featuring end strainers, intermediate strainers per run, posts at 5 m centres, stock netting, and two top strands of barbed wire with gripple fasteners.

All ecological and safety measures were followed, including daily wildlife checks, biodegradable hydraulic oil, biosecurity procedures, and refuelling via a bunded system with drip trays. RAMS covered SSSI sensitivities, welfare provisions, and the requirement for an on-site first aider (+F) due to the remote setting.

The Implementation

Fencing was set out to the agreed line with strainers positioned to accommodate the frequent changes in direction. Posts were driven using the rock spike where necessary and checked for line, plumb, and tension before fixing stock netting and barbed wire. Two 12-foot livestock gates and two 4-foot self-closing pedestrian gates were installed in pre-agreed locations to maintain access and manage livestock safely.

A cattle handling pen was constructed at the northern end of the track, clear of the culvert. The pen measured approximately 8 m by 3.6 m by 1.8 m high, built in horizontal 6x4 timber rails with a maximum 30 cm gap. Gate furniture included two 1.8 m gates at the northern end, a central 3.6 m two-way swinging gate, and a 3.6 m gate connecting the pen to the fence line. All gates could be tied securely open for ease of use.

Additional Projects and Challenges

The hard shale substrate, steep terrain, and limited access required precise coordination between machinery, material deliveries, and environmental monitoring. Daily liaison with WTSWW and NRW ensured that adjustments could be made quickly to protect features, maintain drainage, and keep the installation clear of culverts.

The Results

• Approximately 400 metres of durable livestock fencing installed to specification

• Purpose-built 8 m × 3.6 m × 1.8 m cattle handling pen completed with secure gate configuration

• Improved livestock control to support conservation grazing and habitat objectives

• Works completed within the November 2022 deadline without environmental incidents

The completed infrastructure now enables targeted grazing, reduces browsing pressure on sensitive habitats, and improves safety and efficiency for the Wildlife Trust’s staff and volunteers.

Lessons Learned

Fencing on remote, rocky sites demands the right equipment and local coordination. Using a tractor-mounted post knocker with a rock spike and maintaining daily communication with partners such as Zip World ensured safe access, minimal disturbance, and high-quality results under complex ground conditions.

Call to Action

For conservation-grade fencing and grazing infrastructure on designated or challenging sites, visit www.enviroculture.co.uk or email info@enviroculture.co.uk.