Eaglehawk Neck is less a town than a smattering of holiday homes amid an assortment of natural coastal curiosities. It's the second isthmus crossed as you head south to Port Arthur, this one connecting the Forestier Peninsula to the Tasman Peninsula. In convict days, the 100m-wide Neck had a row of ornery dogs chained across it to prevent convicts from escaping – the infamous Dogline. Timber platforms were also built in narrow Eaglehawk Bay to the west, and stocked with more dogs to prevent convicts from wading around the Dogline, while rumours were circulated that the waters were shark infested. Remarkably, despite these measures, several convicts made successful bids for freedom.
These days it's a far more inviting place, with the coast immediately north and south of the Neck strung with fascinating rock formations – huge stone arches, blowholes, cliffs, strange natural pavement – while the Neck itself has a superb surf beach.