The road then passes Beckermet and Calder Bridge, junctions here give access to the Sellafield site. From Calder Bridge, the A595 forms the boundary of the Lake District National Park, going between the villages of Seascale and Gosforth. It enters the national park at the bridge over the River Irt at Holmrook and continues past the village of Ravenglass, then passes through Waberthwaite and Bootle and round the foot of Black Combe.