It's a long day today since the mountain roads do not allow the car's highest speed exceed 45km per hour. In return, we are crossing the most magnificent part of the Hoang Lien Son range - the Tonkinese Alps, the home of most colourful-dressed montagnards, who still maintain lots of their long-term culture and traditions.
From Mai Chau, we will drive to Son La via Moc Chau, where located hundreds of immense farms of dairy cows and where the best tea of Vietnam is produced. Surrounding Moc Chau is the inhabitation of various tribes including the H'mong, Thai, Muong and Dzao. Let's stop en route to visit villages and orchard/tea farm in Moc chau before reach Son La (200km from Mai Chau) for a late lunch.
Afternoon head to Dien Bien via Tuan Giao. The most picturesque scenery here belongs to Pha Din Pass, which is well-known as a historical site during the 1st Indochina War ended in 1954, and a charming and dangerous pass at elevation 1,300m with breathtaking view.
Arrive Dien Bien in the evening for dinner and overnight.