No special access issues
Park your car at the Ohtakari Grill, there is also a site for camping and Campervans plus shower and toilets ( and very good burger ) Follow the Nature trail ( mostly marked with blue arrows )to the left of the grill until you reach a open pebble field with some big rock cairns. stay left close to the shore and you see a small path that leads through the bush to the first boulder. The second bloc is further down the pebble field and than also left down by the sea.
This is a nature area where people take walks around the island and have holiday homes, so keep a low profile and always take your trash out