The avalanche hit three groups of climbers, leaving one survivor seriously injured, on the Dôme de Neige des Ecrins mountain near Pelvoux.
Seven French climbers and three Ecuadorean guides went missing in 1994 after an avalanche on the Chimborazo volcano.
The group, which included an experienced guide, died after a terrifying 250-metre fall while trying to scale Europe's highest mountain.
Three Britons, three Germans, two Spaniards and one Swiss climber died in the tragedy on the slopes of Mont Maudit.
Two British climbers aged 22 and 24 died after falling more than 2,500ft near the town of Chamonix in the French Alps.