A very nice title for a hike in the forest of Rambouillet
The Rigoles du Roi are small canals that were used to supply water to the Château de Versailles in the time of Louis XIV. They were supposed to bring water from the Etang de la Tour to the Etang de Saint-Quentin-en-Yvelines and then to Versailles. Nowadays you can see the aqueduct between Le Perray and Veille-Eglise-en-Yvelines. There are hiking trails in the area but it is better to retrace your steps and make your own route to see the aqueduct and the Etang de la Tour, the only two places of any interest. A nice walk for a Sunday outing.