It is possible to enter Laos from Thailand at Nong Khai over the Friendship Bridge. Other border crossings include Chiang Kong (Thailand) – Houei Xay (Laos) in the north Mukdahan (Thailand) – Savannakhet (Laos) and Chong Mek (between Pakse and Ubon Ratchathani). It is possible to enter Laos by road from Vietnam either at Lao Bao or at the new border post of Lak Xao near Vinh. Laos can also be entered from China. Overland travel to/from Cambodia is conducted by river only, from Stung Streng, via the border town of Veunkham. It's a bit tricky, and you can easily pay too much in both transport and border bribes, so talk to other travellers before attempting this.