Tim Doling:
Thừa Thiên, 22 juin 1953 - Sabotage du viaduc de Baika, au col des nuages, photo by Jules Petitpierre, Document ECPAD, www.ecpad.fr, and the same view today - photo Kỳ rỹ Hải Vân (Incredible Hải Vân) by Anh Nguyen (28 April 2021)