't Hain
t Hain is an archaeological site where a Roman camp or watchtower probably stood, given the Roman pottery and pendulum balls found there.
Native pottery was also found. This is where the small river De Vliet flowed into the Cromme IJe. In the 1565, a dike was built against the flooding from Assendelft. Now this and De Vliet lie under a layer of sand on which sports fields have been built.
Note: Continue straight ahead (Busch, Westdijk and Krommeniedijk). On Krommeniedijk, take the first road left towards junction 85. Now return to the starting point, following junction 84, then take the first road right to the management office at Zwaansmeer recreation ground.