Person, Audience, Human, Wheel, Machine, Concert, Speech, Rock Concert, Lecture, Parade, asia, southeastasia, Lao, Laos, Luang Prabang, Luangprabang, city, landmark, wat, temple, pak ou, pak ou cave, cave, caves, lao cave, pak ou caves, buddha cave, buddha temple, wat pak ou, nature, mekong river, mekong cave, building, metropolis, lao, district, urban area, kadai, sino-tibetan, landmass, urban center, laos, tai, asian country