Sail upstream on the Mekong river from Luang Prabang to the caves of Pak Ou. Here, thousands of Buddhist statues stand looking out of the caves. These figures are the accumulation of hundreds of years of offerings from worshippers to whom the caves represent the womb of the Earth. Enjoy a picnic lunch on the banks of the river while soaking up the riverside scenery. A trip up to the caves makes for a relaxing day and a chance to see something of the Laotian countryside.