Breakfast at the hotel. Morning excursion to the Plain of Jars. Mysterious megalithic complex located about 1000 meters above sea level, in an area of about 1 sq. km. The site consists of less than 300 gigantic stone jars tough one to two meters high and a half, mostly semi-underground and it seems that the material does not come from this area. No one knows yet exactly by whom they were built, nor exactly when or why, but the most probable date is the date from about 2000 years ago, but their story is that the use and purpose remain shrouded in mystery. In the afternoon transfer to the airport for your flight to Vientiane.