On the programme: The inscribed stone and the little-known history of “Theopolis,” the legend of a lost city; The vegetation with Mediterranean and Prealpine influences on the ridges; The 360-degree view over the entire Durance Valley and the Alps; The astonishing geology of the Haute-Provence Geopark: the Pierre Écrite gorge, inverted reliefs and immense limestone cliffs; An apéritif at sunset on the ridges and a return as night begins to fall.

Difficulty: Level 3/5. 2 hours 30 minutes of actual walking and 330 metres of uphill elevation gain during the evening. Hiking tour suitable for all audiences, carried out at a leisurely pace uphill, only on well-marked trails or paths, with no steep slopes. People who are afraid of heights might feel uncomfortable at the top of the Gâche ridge, but it is possible – thanks to the width of the ridge line – to keep well away from the edge. Hiking tour suitable for families with children; specific activities can be arranged for them – please let us know when you register.

Guidance - Group hiking tour (maximum 13 people), led by a mountain tour leader based in Sisteron. He will provide you with the technical information and introduce you to the local environment. The route may be changed depending on the weather conditions or the physical fitness of the participants.

Essential equipment: • Ideally, mountain boots with crampons. If not, a pair of trainers • 1 outfit suitable for walking (breathable and lightweight clothing) • 1 water bottle (at least 1 L/person for the outing) • 1 cap or hat, sunglasses and sun cream • A light jumper in case it gets cool in the evening • 1 technical waterproof windbreaker (Gore-Tex type) or a raincoat (depending on the weather)

Optional equipment: • Your phone or camera • Binoculars • Hiking poles (if you are used to walking with them!)