The old French-built hill station of Sapa (1600m above sea level) is the natural starting point for a unique experience of the Sapa area. This includes the Hoang Lien Son mountain range. The old French-built hill station of Sapa (1600m above sea level) is the natural starting point for a unique experience of the Sapa area. This includes the Hoang Lien Son mountain range. The old French-built hill station of Sapa (1600m above sea level) is the natural starting point for a unique experience of the Sapa area.