The Puy Mary is a summit in the mounts of Cantal in Massif Central in France.

The mountain is an extinct volcano, about 6.5 million years old, which was formed by the accumulation of viscous lava (trachyte).

[3] It has been gradually eroded by glaciers during the Quaternary glaciation, which explains its pyramidal form.

It is accessible starting from the Pas de Peyrol, which at 1,589 m above sea level, is the highest pass of the Massif Central.

For example, one will be able to find, with a little chance, the following species of high mountain : the saxifrage with opposite sheets (Saxifraga oppositifolia), the saxifrage with sheets of Androsace (Saxifraga androsacea), the verticillate pedicular (Pedicularis verticillata) or the saxifrage of Lamotte (Saxifraga exarata subsp lamottei), the latter being an endemic species of the Cantal and the monts Dore.