La Plaine circuit (no. 8)

8 points of interest

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  Flora

  The European silver fir

  The fir thrives on this north-exposed slope, called the ubac. Its needles have two white stripes on their undersides. They are arranged on either side of the boughs, and not all the way around them, which distinguishes it from the spruce. The elongated cones stand upright, rather than hanging downwards. They grow in large number, often mingling with larch trees under whose shade they can grow. By contrast, the larch - the "tree of light" - cannot grow under the cover of fir trees.

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  Flora

  The creeping lady’s-tress

  This inconspicuous little orchid grows on moss, in the undergrowth of the pine forest. Growing at the base of the stem, its leaves are oval and pointed, with a network of veins. The upright stem only bears a few scales. Covered in a fine down, the white flowers are arranged in the form of a spiral spike, facing the same way. A little gem that is worth keeping an eye out for!

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  History

  The Freissinières valley

  The valley was created as the result of glacial overdeepening, that is to say, when the glacier came to a halt against the Pallon hard rock bar, it created a depression. When the glaciers retreated, a lake was left behind this rock bar and was gradually filled up by alluvial deposits. From a historical point of view, the Protestant pastor Félix Neff fundamentally altered life in the valley in 1826 by founding a training college for primary school teachers, developing irrigation processes and teaching new crop growing methods, among other things…

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  Fauna

  The red squirrel

  Elegant and alert, a squirrel crosses the track, followed by its long feathery tail. Red? This one is dark brown. In the mountains this rodent has adopted a “solar panel” strategy, on the principle that dark colours absorb the heat more efficiently. It is active during the day and does not hibernate, although it does minimise its activity on days when the weather is bad. It is a protected species.

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  Flora

  The horsetail

  On the banks of a stream, on the edge of a ditch a plant grows which resembles a large bottle brush... or a horse's tail, depending on your imagination. It's the field horsetail, a plant related to ferns. It is known for its medicinal properties because it is rich in silica, a powerful remineraliser for the bones, cartilage and skin. There are several species of horsetail. 

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  History

  Freissinières

  The name Freissinières comes from the old word freissinière meaning "black ash". This municipality, which extends as far as the Col des Terres Blanches and the Col de Freissinières, both of which overlook the Champsaur valley, is made up of thirteen hamlets, although none of them are called Freissinières! Archaeological excavations carried out twenty years ago show that sites at high altitude (such as Faravel) were occupied on a seasonal basis from the retreat of the glaciers 12,000 years ago (Upper Palaeolithic period) and that this occupation continued after that.

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  Flora

  The petasites hybridus or butterbur

  The ditches on the Freissinières plain are edged by a plant with very broad leaves: the petasites hybridus or butterbur, also called the devil's hat in French. In Ancient Greek, the petasos was a round felt hat. Nobody knows whether the devil wears this hat, but the plant is certainly used as a herbal remedy. Very common in the lowlands, it is quite rare in the Pays des Écrins although other species of petasites do grow at higher altitude.   

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  Fauna

  The southern water vole

  Flattened paths through the reeds, and holes 6 to 7 cm in diameter... the southern water vole has been here! This large rodent with dark brown fur on its back digs its burrow in the banks of the stream. This species, which lives close to water, causes no damage to crops. Not a prolific breeder, its numbers are low and it is threatened with extinction.