About 15km towards Sapa is Thac Bac (Silver Waterfall). With a height of 100m, it's a big one, and the loop track is steep and scenic.

Lying beside National Highway 4D, the waterfall pours down like a giant white dragon descends from the sky. It is formed by sources of water from the Lo Sui Tong mountain peak, roaring and producing white foam to offer a stunning view over surrounding mountains and lush forests. Visitors may climb up the top of the waterfall to enjoy greater sight, which invokes a certain feel of romance. Bring along wide-angled cameras for the mountains, you won’t regret it.

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