From Grinton you climb south-westwards out of Swaledale along miners' tracks across Harkerside Moor, passing old lead mine workings, before reaching the highest point of the day at Apedale Head (545m). You descend the lonely valley of Apedale and cross East Bolton Moor to Castle Bolton (milepost 49). There is time to visit the great square keep of Bolton Castle before descending into Wensleydale again. 