Armstrong responded to climbers' attacks

Although Armstrong can be well pleased with his day's work - he matched every attack from the specialist climbers Pantani and Virenque - he admitted that the mountains were taking their toll.

"It was very difficult, very long, very windy. I didn't have much left in my legs," the 28-year-old Texan said.

"But the team worked really well for me. I'm really tired."

Postal power

Responding to recent media criticism of his team, Armstrong backed his team-mates.

"I think this is the best team in the race. We had eight guys (in the leading pack) at the bottom of Col d'Izouard, who else can say that?" he said.

Botero was clearly delighted with his victory, and dedicated the triumph to his country.

Ullrich cannot shake off Armstrong

"I'd like to offer this win as a gift to Colombia, which is going through difficult political times. It's an incredible moment for me," he said.

The stage started in sunshine and warm temperatures with 145 riders still on course for the finish in Paris.

The day's severe climbs claimed two victims, however, as Stephane Heulot and Rik Verbrugghe retired from the race.

But it is not going to get any easier for those left in the Tour. Sunday's 15th stage includes the fearsome climbs of Galibier, Telegraphe and Madelaine.