Go to the Lac de Guery and park in the large car park at the end of the lake(S) This is where this walking tour in Auvergne starts.
Take the GR®30 path (red and white waymarks). N.B. Contrary to what is stated on the IGN map, this GR® path goes along the right bank of the lake in order to avoid the road.
Stay on the waymarked hiking trail which, after taking you on a path due south to the end of the lake, goes towards the west. You'll reach the summit of Puy Gros (1) Go downhill to the hamlet called Tenon. Here you leave the hiking trail (2)to take a smaller hiking trail (yellow waymarks), going through pastures and leading to a large track at the Col de St-Laurent (3) Take a left to reach the summit of La Banne d'Ordnacge (4) going up the wooden stairway.
Return to the crossroad mentioned before and continue on the track, due East and then due North-East. Go through the farm of Puy Mary ruins (5)before regaining the heritage trail (Sentier Découverte) (6) which takes you back to the car park.