Pristine waterfall straddles Vietnam-Laos border 2 October 2022 bwsadmin News Travel Vietnam A Doi waterfall is an underrated gem located on Se Pon River, the natural border between Vietnam and Laos. Source: VNExpress International, https://e.vnexpress.net/photo/places/pristine-waterfall-straddles-vietnam-laos-border-4515301.html