Castel Dû

The medieval enclosure of Kastell Du (literally the Black Castle) is referred to as an ‘earth fort’.
Triangular in shape, 150 metres on each side and over two millennia old, it stands 7 metres high on an 18-metre base, surrounded by a dry moat.
A defensive complex designed to protect the ford and river traffic on the Jaudy, it became a refuge and sheltered a garrison of Charles de Blois in 1347, during the War of the Breton Succession between him and Jean de Monfort, who coveted the...