Walk linking the village of Lentiol on the plateau overlooking the Bievre to the cultivated lands called "White Lands". Distance: 6 km - Duration: 2h - Altitude difference: +143 m - Level: Very easy - Located near the plateau, the place where the castle of Lentiol was located had a strategic position. It remains more vestiges of this medieval castle quoted since the twelfth century. At that time, the bièvre and the plateau Chambaran constituted a buffer zone between the possessions of Dauphine and those of the Counts of Savoy. Clashes regularly opposed them and the Dolphins built castles to defend their principality.