Crown Prince Vong Savang, shaded by a parasol, looking back to the lower Pak Ou cave ("Tham ting"), as he boards a boat to return to Luang Phrabang via the Mekong River. The Pak Ou Caves (two caves) are about 25 kilometers north of Luang Phrabang, on the opposite side of the Mekong River from Wat Pak Ou.