Twm Siôn Cati

Twm Siôn Cati's Cave (Ogof Twm Siôn Cati) is a small rock hideout on wooded Dinas Hill, next to the village of Rhandirmwyn in Carmarthenshire (Sir Gaerfyrddin), mid Wales. Local tradition says it sheltered Twm Siôn Cati, the outlaw often called the Welsh Robin Hood. The hill is now part of the RSPB Gwenffrwd-Dinas reserve.

Who was Twm Siôn Cati?

He sits between history and folklore. Records know him as Thomas Jones, who lived in the sixteenth century. Stories paint him as a cunning rogue who kept outwitting the authorities. Sources add that he later became a poet, genealogist and antiquary, and some tales even give him a magistrate's role in Brecon. Dates vary by account, from about 1530 to 1620 or from about 1532 to 1609.

What will you see?

The cave lies on the north-west side of Dinas, and the national heritage record (Coflein, RCAHMW) lists it with its legend. Some visitors call it more of a grotto than a cave, so don't expect to go exploring. The draw is the story and the setting: the hill gave a clear view of anyone approaching, which explains, in the legend, why he chose it to dodge the Sheriff of Carmarthen.

The surrounding woodland is rich in wildlife. In summer you may hear pied flycatchers, wood warblers, tree pipits and redstarts, and red kites are a common sight above the valley.

How do you get to the cave?

The walk starts at the Gwenffrwd-Dinas RSPB car park, which holds about eight cars. The circular route measures roughly 3 to 4 km depending on the guide, and opens with a boardwalk with steps. A short, steep side path branches off the main trail up to the cave; it is marked on OS Explorer map 187. Wear sturdy boots, as the climb can be muddy.

The reserve is open from dawn to dusk with free entry, and a small parking donation is requested. The nearest town of any size is Llandovery, about 12 miles to the south. No buses continue from there, so a car is effectively essential.

When should you visit?

Late spring to early summer is best, when birdlife peaks and the woods are green. Autumn brings colour, but paths turn slippery after rain. Allow around 1.5 to 2 hours for the loop including the climb and a few stops.

What else is nearby?

After your walk, the Towy Bridge Inn near Rhandirmwyn is handy for a meal. The Tywi valley and the Llyn Brianne reservoir area offer more walking in quiet, remote scenery.

Frequently asked questions

Is Twm Siôn Cati's Cave big? No, it is a modest grotto. Visit it for the legend and the woodland setting rather than for any large chamber.

Do you have to pay to enter? No. The RSPB reserve is open dawn to dusk, and a small donation at the car park is welcome.

Is the walk difficult? The loop is short and gentle, but the branch up to the cave is steep. Anyone reasonably fit with solid footwear can manage it.

Can you reach it by public transport? Buses run to Llandovery, but nothing continues to Rhandirmwyn, so driving is the practical choice.