EUROPE'S SECOND HIGHEST SAND DUNES
The Dunes
A Landscape Shaped by Wind and Time
Rising to 200 feet, the Big Dipper at Merthyr Mawr is part of the second highest sand dune system in Europe. These aren't gentle, rolling mounds — they're towering walls of sand, sculpted by Atlantic winds into a landscape that feels more Saharan than South Welsh.
Centuries in the Making
The dune system began forming in the Neolithic era, but it was the great storms of the 13th and 14th centuries that truly shaped what we see today. Vast quantities of sand were driven inland from the coast, burying settlements, fields, and even Candleston Castle beneath their advance.
Archaeological evidence beneath the dunes reveals layer upon layer of human habitation, making this a Scheduled Ancient Monument of national importance. What lies beneath the sand is as remarkable as what rises above it.
A Star of the Screen
In 1962, David Lean chose these very dunes to double as the Arabian desert for his epic film Lawrence of Arabia. Peter O'Toole and Omar Sharif walked the same sand you can walk today. Since then, the dunes have appeared in numerous productions, their otherworldly quality drawing filmmakers back time and again.
Where the Dunes Meet the Sea
Beyond the dunes lies 1.3 kilometres of sandy beach, where the Bristol Channel stretches toward the horizon. The walk from the car park takes you through shifting sand and scrubland before opening up to a wild, unspoilt coastline. It's not the easiest beach to reach — and that's precisely its appeal.
A Living Landscape
The dune system supports an extraordinary diversity of habitats — from mobile sand and damp dune slacks to limestone grassland and scrub woodland.
25%
of all Welsh flora species can be found within the dune system, including rare orchids
840
acres of National Nature Reserve, designated as both an SSSI and a Special Area of Conservation
200ft
the height of the Big Dipper, making it one of the tallest sand dunes in Europe
Getting Here
Access the dunes from Candleston Car Park, located at the end of the estate road. The car park uses an ANPR system — season tickets are available at the machines on site.