Timeline: Norwegian ski tragedy

A cross-country skier has survived an ordeal on a frozen Norwegian mountain which claimed the life of his son and their companion.

Here is a summary of key events, based on information received from Norwegian police.

MONDAY 12 MARCH

The two skiers who died on the Norwegian mountain are named as Peter Wilson, 18, from Drumnadrochit and James Ross, 50, from Ross-shire.

The survivor is named as 48-year-old Rupert Wilson, who is the father of Mr Wilson.

He is in a stable condition in hospital after suffering severe hypothermia.

The mother of the teenage skier who died describes him as a "wonderful boy".

SUNDAY 11 MARCH

A patrol from the Eidfjord Red Cross Rescue Service is on its way to Finse to collect some equipment when it spots several pairs of skis next to the ski run.

After investigating the area, rescuers find a group of three men, two of whom are dead and the third is suffering from serious hypothermia, but still conscious.

The Red Cross group immediately take the survivor by snow scooter to the main road and then by ambulance to Eifjord, from where he is taken by helicopter ambulance to the Haukeland University Hospital in Bergen.

SATURDAY 10 MARCH

The three skiers continue their trip, but by then one of them has already become very cold and is clearly being affected by the weather.

The men leave a rucksack at the snow cottage in order to lighten their load. They then follow a marked ski run.

At Langavannet, the group stop behind a large stone because of bad weather, which consists of a mixture of snow, rain and strong winds.

By this time the men are seriously affected by the conditions and all three are wet and cold.

They pack themselves in a sleeping bag and wind sheet and wait for better weather.

On Saturday afternoon, one of the members of the group dies.

The two remaining realise the critical situation they are in and do what they can to stay alive.

On Saturday night, a second man dies.

The third man tries to move on, but is unable to do so because of a ruined ski shoe.

He tries to walk onto Kjeldebu, but has to give up and returns to the stone and the two deceased men.

FRIDAY 9 MARCH

At 1015 local time, the three Scots leave Finse station on skis, planning to travel from cottage to cottage in a southerly direction on the Hardanger Plateau until 16 March, when they are scheduled to take a return flight to Scotland.

The weather is good early on Friday morning, but it changes during the day and becomes very difficult in the afternoon.

The three are surprised by the storm and are not able to make it to the Kjeldebu cottage, which is their target for Friday.

They take up alternative shelter in a snow cottage on Friday night.