Les Têtes via La Pignée (trail route no. 23)

12 points of interest

• 

  Water

  The white water stadium

  As part of its restructuring after the closure of the industrial site, the town of L'Argentière-la-Bessée opted for sports tourism, exploiting the natural elements present on the site, that is to say, water. Standing at the beginning of the longest navigable section of the Durance river, in 1993 the municipality decided to establish itself as a major white water centre by creating this stadium which covers a 400-metre stretch. So thanks to its reputation and its ideal situation, every year this stadium hosts several elite competitions at national and international level.

  More information
• 

  Water

  The Fournel

  The source of the Fournel rises in the Fournel valley, in the heart of the Parc National des Écrins, and flows into the Durance near the white water stadium. It is known as a high alpine canyon offering lots of sport and leisure possibilities, and is the most popular in the Haut Val Durance. It is ideal for an introduction to vertical activities, in particular thanks to the presence of several jumps, toboggan runs and rappel sites. Access is authorised from April to October and is regulated because it is located upstream from an EDF water intake, which presents a real hazard.

  More information
• 

  Water

  The Durance

  The Durance is the biggest river in Provence. Its source rises in the municipality of Montgenèvre at an altitude of 2,390 metres, and it flows down to meet the Rhône to the south of Avignon. This is a "pluvio-nival" river, that is to say, its flow depends on the natural addition of water due to snowmelt and rainfall. It thus constitutes a real playground for kayakers from across Europe.

  More information
• 

  History

  The Francis turbine

  The American James Francis developed the Francis turbine between 1849 and 1855. It is a “àreaction” turbine suitable for medium-sized waterfalls (with a water head of between 15 and 500 metres). The water enters the turbine and then circulates between the turbine blades, which are fixed, while the inner wheel is mobile. The pressure at the wheel intake is greater than the pressure at the outlet. 

  More information
• 

  Flora

  The Apollo

  This large white butterfly decorated with black marks and red dots, is common in warm areas where stonecrops and houseleeks grow, as these are host plants for its caterpillars. It remains common in the Alps, but is much rarer elsewhere. In fact, it is a protected species. Its movement to higher altitudes has been observed, in line with climate warming, because its eggs, which it lays on plants in summer, need a certain number of days of freezing temperatures in winter in order to hatch.

  More information
• 

  Flora

  The Scots pine

  The path first runs up through a forest of Scots pines, a tree identifiable by its salmon-coloured bark, especially at the top, and its needles arranged in pairs. It is the typical tree of warm south-facing slopes in the montane zone of intra-alpine valleys.

  More information
• 

  Fauna

  The deer

  Deer are well-established across the Pays des Écrins. You can spot clues as to its presence: hoof prints or droppings, often in little piles. The stag loses his antlers at the end of winter (February-May) and they regrow up to the end of August. They reach full development before the rutting season (September), when you can hear the rutting call. The doe has no antlers.

  More information
• 

  Panorama

  The Les Têtes belvedere

  This belvedere is worth the diversion, not only for its unrestricted panorama over the Fournel and Durance valleys but also for the place itself, with its sparse mature larches and the bare limestone scored with small fissures. These were created by the erosion of the rock by cold snowmelt waters or rain.

  More information
• 

  Flora

  The wild angelica

  On the edges of seepage areas, the wild angelica grows. This is a tall umbellifer (the Apiaceae family) with blush white flowers and a hollow purplish stem. It is a cousin of garden angelica which grows in Northern Europe and is cultivated for its medicinal and culinary properties. The stem, the petiole (the «tail») and the leaf sheath can be candied.

  More information
• 

  Flora

  The silver fir

  A few coniferous trees, including the fir, are mixed in among the deciduous trees. The fir thrives on this north-exposed slope, called the ubac, because it cannot tolerate drought. Its flat needles are arranged on either side of the boughs rather than all the way around them, which distinguishes it from the spruce. They have two white stripes on their undersides. Its elongated cones stand upright, rather than hanging downwards.

  More information
• 

  Flora

  The sea-buckthorn

  Here and there, you come across a bush with narrow leaves which are green on their upper sides and silvery-grey underneath. Take care, the branches are spiky! In autumn, it produces acidic bright orange berries. They are very rich in vitamin C and are best as a syrup or marmalade. It is a pioneer species which colonises alluvial soils in sunny situations. It has also been used by the Mountain Terrain Restoration service to stabilise slopes prone to water runoff. 

  More information
• 

  Fauna

  The common chiffchaff

  When spring arrives, a relentless «cheep, cheep» echoes around the forest. The singer is a small bird with a greenish grey and yellowish-white back, the common chiffchaff. Like other inconspicuous birds, the male has every incentive to make himself heard if he wants to attract the attention of a female! They are migratory and live almost anywhere where there are trees and bushes. 

  More information