According to Lao Cai province’s Hydro-Meteorological Station, it was high-level radiation in the daytime combined with a huge drop in temperature at night that led to the formation of hoar frost.
The phenomenon began on the night of December 5 and ended on December 7, 2021.

Visitors had an opportunity to admire the snowy scene from the Fansipan cable cars, which just opened after a long shutdown during the COVID-19 pandemic.

Tourists were thrilled at the sight of frost on the famous peak. (Photo: VNA/VNS)

Handwriting left on the snow-covered surface of Fansipan.

This was the second time that hoarfrost had been reported on the peak of Fansipan since the beginning of this year’s winter season. (Photo: VNA/VNS)