Tomorrow I move on from Chiang Rai in Thailand to Laos via Chiang Khong on the Thai side and Huay Xai on the Laos side. Then it's some trekking in the north around Luang Nam Tha, maybe up to Muang Sing, before heading back down toward Huay Xai for a slow-boat on the Mekong to Luang Prabang followed by gradual travel south toward Cambodia.