The submerged forest, or 'petrified forest,' consists of tree stumps that are approximately 5,000 years old.
The dunes at Ynyslas are a designated Special Area of Conservation due to their shifting mobile sand ecosystems.
The Dyfi Estuary is an important wintering site for Greenland white-fronted geese.
The reserve is part of the first UNESCO Biosphere Reserve in Wales.
The sand spit is highly dynamic and can shift significantly in position and length following severe winter storms.
Ynyslas National Nature Reserve sits at the southern edge of the Dyfi Estuary in Mid Wales, featuring a vast expanse of sand dunes and salt marshes. The site is part of the Dyfi Biosphere, a UNESCO-designated area recognized for its ecological importance. A distinctive feature is the submerged forest, which becomes visible during low tide, revealing ancient tree stumps preserved in peat. The dunes are home to rare orchids, including the marsh helleborine, and support populations of skylarks and meadow pipits. Boardwalks provide protected access across the fragile dune systems to prevent erosion. The reserve offers extensive views across the estuary toward Aberdovey. It serves as a vital habitat for migratory birds, particularly during winter months. The sand spit changes shape continuously due to the powerful tides and shifting currents of the estuary.
The raised boardwalks during the golden hour for wide-angle shots of the dunes and the estuary.
Check local tide tables before visiting if you wish to see the submerged forest.
Stay on the designated boardwalks to protect the sensitive marram grass and dune habitat.
Bring windproof clothing as the open estuary environment is consistently breezy.
Attempting to cross the estuary channel during an incoming tide, as the current is extremely dangerous.
The visitor centre may have reduced staffing during winter months, though the reserve remains accessible.
Keep dogs on leads in nesting areas during the spring and summer; do not pick wildflowers.
