Access to the ski stations of Ménuiruies and Val Thorens in the Alps was cut off for a period after the route was blocked by two boulders.
A cross-country skier was the 28th person killed by avalanches in the French Alps this winter, while four Italians died on slopes in Switzerland.
The experienced skiers, four men and two women aged between 58 and 73, were trekking at 7,900ft when they were swept to their deaths.
Passengers had left Alpine ski resort when coach skidded off motorway near Chambéry, leaving 13 people hurt.
Parents manage to climb out of crushed chalet but boys aged seven and 10 are killed in France's Isola 2000 Alpine resort.
Seven instructors have been arrested in the French Alps for providing lessons without a licence as part of a bitter jobs war on the ski slopes.
At least 24 people have died in avalanches in France and Switzerland since Christmas; a similar number have escaped, many with serious injuries.
French experts investigating the accident that left the Formula One legend with serious head injuries hope footage will explain how it happened.
Doctors say they are working around the clock to save life of Formula One racing legend who is now in 'critical condition' after fall in French Alps.
Pyrénées resort is believed to be first to open in June after unseasonably low temperatures left slopes covered in as much powder as January.
Scores of angry Britons on skiing holiday in the Alps stage demonstration outside a French police station to protest against instructor's arrest.