We took a boad from Chou Doc to Phnom Penh, Along the way we had to pass through immigration from Vietnam into Cambodia. This took a little over an hour. There were four stations, first to Issue a visa, Second to issues and entrance and exit document, a thrid to review and stamp the visa and entrance documents and finally an exit check to make sure we had all the stamps. I am glad i live in AMERICA!

Cambodian Border Crossing Check on Mekong River