Puits des Tines

Puits des Tines is a striking waterfall on the Séran river, tucked into a rocky gorge between the former villages of Lompnieu and Champagne-en-Valromey, within the commune of Valromey-sur-Séran in the Bugey area of the Ain department, France. It is one of the most distinctive natural landmarks of the Valromey valley, where the river carves through limestone in an unusual and memorable way.

What can you see at Puits des Tines?

The main draw is the waterfall itself: the Séran drops through a series of natural holes worn into the rock at the top of the fall, splitting the flow into several separate streams as it plunges. At the base, the river has carved out a deep, cauldron-shaped pool — wider at the bottom than at its opening — reaching more than 6 metres in depth. The water inside takes on a striking blue-green colour that stands out against the pale limestone around it. Downstream, the riverbed opens onto broad, flat limestone slabs that warm up in the sun during summer.

How do you get to Puits des Tines?

The site sits along the road connecting Lompnieu and Sutrieu. Park near the "Puits des Tines" sign and follow a short path down toward the riverbed. The waterfall is also part of a longer walking loop that takes in the Pont des Tines, the Étang des Alliettes pond, and the Belvédère de Châteauneuf viewpoint. The route stays at a moderate altitude, so it can be walked for most of the year.

Can you swim at Puits des Tines?

No. Swimming and picnicking along this stretch of the Séran are prohibited in order to protect the site's natural character. The path leading down to the edge of the gorge is unsecured, so caution is advised, especially on wet rock.

When is the best time to visit Puits des Tines?

The waterfall is at its most dramatic in spring, during snowmelt, and after heavy rainfall, when the Séran's flow increases noticeably. During drier spells the flow can be much lighter, though the shape of the rock and the pool remains visible year-round.

What is the history behind Puits des Tines?

Centuries ago, local residents harnessed the Séran's flow for practical purposes: a water mill was built on the river's right bank near Lompnieu. Part of the current was diverted through a channel to turn the mill wheel, which was used to grind grain into flour for bread. Little remains of the old installation today, but this history explains why the site has long held a place on the map of Valromey.

Frequently Asked Questions

Is Puits des Tines the same as Cascade de Cerveyrieu? No. They are two separate sites within the same commune of Valromey-sur-Séran — Puits des Tines lies on the Séran between Lompnieu and Champagne-en-Valromey, while Cascade de Cerveyrieu is a different, standalone waterfall.

Is the walk to Puits des Tines difficult? The approach from the road is short, but the path down to the waterfall itself can be steep and slippery, particularly after rain — sturdy footwear is recommended.

Can you swim in the pool at the base of the waterfall? No, swimming is prohibited for both conservation and safety reasons — the site is neither supervised nor secured.

Are there other attractions nearby? Yes — the same walking loop also passes the Pont des Tines, the Étang des Alliettes pond, and the Belvédère de Châteauneuf viewpoint.