Departure from the Belle Vue cable car. Then we take the famous Mont Blanc tramway to the Mont Lachat station. We arrive at 2,077 metres. This is the terminus as the tramway does not currently go to the Nid d'Aigle.
(S/E) After admiring the landscape, we begin the hike along the railway line on a slightly higher path towards the Col des Rognes. Follow the markings (paint on the stones).
After a short climb, turn left and continue on the path or large rocks to the Dérochoir. The climb is still very steep.
(1) To get past the Dérochoir, you have to climb several ladders (beware of vertigo).
You will then arrive at a basin from where you can see the new Refuge du Goûter perched high above. Head for the signs indicating the Mont Blanc route and simply follow the hikers setting off to climb Mont Blanc. From this point onwards, crampons are compulsory. Continue over the rocks and climb up a very steep slope. Some sections are equipped to make the climb easier. Follow the markings carefully.
(2) When you reach the Tête Rousse glacier, find a way to cross it and head for the Refuge de Tête Rousse.
(3) Descend via the same route to reach the Col du Mont Lachat (S/E).