Northern Laos Getting to and around northern Laos The gorgeous Ou River Valley: Nong Khiaw, Muang Ngoi, and Muang Khua Huay Xai, the enchanting Gibbon Experience and the 2-day Mekong Slow Boat Luang Namtha for unforgettable trekking in old-growth jungle amongst the hill tribes Muang Xay / Oudomxay: a travel hub with two names Phongsali: trekking in the very remote far north Sam Neua, the Vieng Xai caves, and Nam et-Phou Louey NPA Phonsavan and the Plain of Jars