Bac Son Valley

Bac Son is a flat-floored basin ringed by limestone karst, farmed in a patchwork of small rice plots by Tay and Nung villages, and it is photographed almost entirely from one place: Na Lay hill, reached by around twelve hundred steps from the road, from which the whole valley lays out as a mosaic. Because the plots are farmed by different households on slightly different schedules, the harvest comes in patches rather than all at once, so the valley reads as a mix of gold, green and cut stubble at the same time - which is the effect people come for. Bac Son also gives its name to a prehistoric culture identified in caves nearby.

What you actually see

• A flat basin in karst - farmed in small plots by Tay and Nung villages.
• One viewpoint - Na Lay hill, about twelve hundred steps up.
• Patchwork harvest - households cutting on different days.
• A prehistoric culture named for it - identified in caves nearby.

When to go

July for green and late September to October for the gold. A full day.

Honest expectations

The climb is steep and hot and the steps are uneven. Timing the harvest is imprecise. The valley is a long drive from Hanoi on busy roads. There are few services in the valley.

Nearby

Lang Son is east; Thai Nguyen and its tea are south-west.