This is a pleasant 7km walk through diverse habitats. 2km (or more) is on boardwalks making the walking (generally) easier. Interpretation is patchy and whilst the route is reasonably well waymarked you really do need a map. The rock is huge - 7x11x15m (apparently). Crane are apparently in the area but we did not see any.
The boardwalk and tower are being renovated making access easy. When we visited it was not possible to climb up onto the stone: many be that will be reinstated