Drive to Portland Bill and park in the car park (fee). Walk back up the road past the Pulpit Inn and head out leftwards up a minor road towards the Coastwatch lookout. Just before the Coastwatch lookout, go down a grass slope to the cliff edge, then descend a steep and precarious path (rope sometimes in place) onto a promontory. The path gains the boulder beach below the right-hand side of Coastguard North. The Descent Boulders are on the beach to the left (looking out). To reach the North Boulders, contune northwards along the beach for 100m.