Tar Rocks

Tar Rocks is a dark limestone formation along the western shore of the Isle of Portland. The rocks create a natural boundary where the land meets the sea, stretching along the water's edge.

This rock formation developed over millions of years through natural sedimentary processes during the Jurassic period. It marks the long geological history of Portland's coastal landscape.

These dark rocks hold meaning for those who work on the water and shape how locals relate to their coastline. The formations serve as natural landmarks that have guided seafarers and remain part of how the community understands its shore.

Visiting this site requires attention to tidal conditions, as the rocks become partially covered by water during high tide. It is best to plan your visit around low tide for safe exploration.

These rocks naturally seep a tar-like substance from within, a rare geological process in Britain. Few other places in the country display this particular formation and mineral discharge.

GPS coordinates: 50.55067,-2.45302

Latest update: December 14, 2025 18:42