1.75-mile hike around and among the interesting rock formations at Castle Hill along the Great Alpine HIghway. From the parking area, we walked along a dirt road toward a cluster of weird rock formations, rising from the landscape like ancient, weathered sculptures, or perhaps an old ruined castle. We really could go wild with our imagination here. Upon reaching the boulders, we followed the track around them and sometimes wandered in and amongst them along a natural maze with a confusing network of passages, hidden corners and dead ends.