Know Before You Go
When you park at the car park for the Glenarm Coastal Path and head to the farthest point on the path to the south, you will come across the first large boulder. At this point, continue walking on the roadside instead of walking over the large grass slope. Keep to the left of the road until you see the Madman's Window boulders to your left. Then jump up onto the grassy area of the site.
You can get to the Glenarm Coastal Path either by car or bicycle. The nearest bus route will take you into Glenarm village itself.