Around Lake Vouglans, the forest mixes with Jura geology marked by cliffs and rock. This gives rise to rock formations navigating in a universe that is both mineral and vegetal.
An impressive and beautiful site. Water falls in rain along an overhanging cliff. This gives it a little air of an "exotic" waterfall, such as one can find on Reunion Island for example.
Shortly before reaching Lake Vouglans, the Ain crosses rocks which create a series of waterfalls. From the bridge that crosses Pont-de-Poitte, the view of this strange limestone formation is superb.