Sageston School pupils recently took on the challenge of tracing the course of the Milford Haven Estuary.

The expedition, led by Tom Bean, education officer with Pembrokeshire Coast National Park Authority, was part of the Gwreiddiau/Roots initiative.

This initiative is run by the park's charitable trust with financial support from South Hook LNG Terminal.

The pupils began their journey at the Preseli peatbog, inspecting the sphagnum moss at Bwlch Gwynt.

They then followed the water's course to the streams of Pantmaenog in Rosebush and learned about the importance of the reservoir at Llys-y-Frân.

The class engaged in various activities to test flow, depth, and river wildlife along the way.

They moved on to Gelli Bridge before reaching Picton Point, where the Eastern and Western Cleddau rivers merge into the Daugleddau.

Mr Bean said: "The visit to Llys-y-Frân was a real highlight for the pupils.

"None of this would have been possible without the support of South Hook LNG, and we are incredibly grateful for their commitment to fostering environmental education and stewardship among our young people."

The pupils' work, including poems, prose, artwork, and maps, was displayed in an exhibition at Haverhub in Haverfordwest.

South Hook LNG's general manager said: "It was a pleasure to join the group at Llys-y-Frân, part way through what was an exciting and hugely beneficial day of learning for the pupils of Sageston School.

"We are very proud of our relationship with Pembrokeshire Coast Charitable Trust and the outdoor educational opportunities that the Roots project is bringing to children across our county."

The Gwreiddiau/Roots project, now in its fifth year, has resulted in 4,597 pupil sessions, equating to around 18,000 hours of learning in Pembrokeshire's natural environments.