Cirque de Saint-Même, Glacial cirque in Saint-Pierre-d'Entremont, France.

Cirque de Saint-Même is a natural amphitheatre at the eastern end of the Chartreuse massif, at 900 metres altitude, cut through by the Guiers Vif, which separates the Savoie and Isère departments. Its Urgonian limestone cliffs rise 500 metres and hold four waterfalls, from top to bottom the Cascade des Sources, Grande Cascade, Cascade Isolée and Pisse du Guiers. The rock wall curves inward in a wide concave arc, with forest on the lower slopes and a band of conifers along the crest.

The Guiers Vif, which crosses the cirque, formed the historical border between the Dauphiné and the Kingdom of Savoy; it now marks the limit between the Savoie and Isère departments. The site lies within the Hauts de Chartreuse national nature reserve, in the communes of Saint-Pierre-d'Entremont in Savoie and in Isère.

The Guiers Vif, which runs through the cirque, marked the historical border between the Dauphiné and the Kingdom of Savoy, and today separates the departments of Savoie and Isère. The four waterfalls carry local names: from top to bottom, the Cascade des Sources, Grande Cascade, Cascade Isolée and Pisse du Guiers. Along the Guiers Vif, visitors can watch the dipper (cinclus), a bird that dives in the current.

A marked trail loops through the site leading to the waterfalls, with portions passing through forested areas and rocky ground. The best visits happen after heavy rain or during spring melt when water flows are strongest.

Each of the four waterfalls carries its own local name reflecting its location or behavior, with the Cascade Isolée standing apart from the others. These names grew from common usage by walkers and locals who know the place well.