Distance: 9 km
Duration (average) : 3h
Level: Blue level - Moderate
Elevation: 288 D +
Departure: Merlas
Yellow paint markup and directional posts at the main intersections (if there is no markup, stay on the main road).
In the countryside
Recommended period (s): Autumn, Summer, Winter, Spring


During this ascent in the old Black Forest of the Chapel of Merlas, you will have views of the whole town and will appreciate the freshness in hot weather!

Round trip possible as far as La Pierre à Matta: in patois "to kill", it is a sacrificial stone in the shape of a dolmen near which flows' The Fountain of the Virgin ". The young girls came to drink its water to see it answered their wish to get married within the year.

Topo/step by step: 
Stages of the circuit with the name of the signposts to follow: - Merlas - Merliette - Chemin Neuf - Le Grand Champ - AR possible (off map, 800m): Croix Saint-Roch then La Pierre à Mata - Le Grand Champ - Sous Marfay - Bois de Carabotin - Merliette - Merlas

Tips and Suggestions: 
Do you often hike in Pays Voironnais? Come and discover the map of walks and hikes in our reception offices in Voiron and Lac de Paladru (on sale at 5 €).

Sustainable tourism : 
Mother Nature thanks you for leaving with your waste, she digests it badly! Respect cultures and private properties by staying on marked trails.

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Equipments & services


  • Parking

Home of animals

  • Animals accepted: Yes
  • Animals accepted without supplement


Our contact details

The old Black Forest from the Chapelle de Merlas

Parking in front of the Town Hall

38620 merlas

Getting to the starting point