Vang Vieng Blue Lagoon

The Blue Lagoons are the postcard image of Vang Vieng: pools of luminous turquoise water fed by springs at the foot of forested limestone cliffs, shaded by overhanging trees and ringed by roots and rocks that make natural diving platforms. There is more than one lagoon in the area, usually numbered by locals and operators, and each has its own character. The best-known lagoon sits close to a cave and a small viewpoint trail, while others lie further out, reached by a rough road through farmland and villages. Water colour comes from minerals in the spring and the white limestone beneath, and it changes with light and season, shifting from bright aqua on sunny days to deeper green under cloud. Visitors swim, float, jump from a tree swing, picnic on the banks and simply admire the view. Cool water is a welcome relief from the tropical heat, and the area is a favourite with both couples and groups of friends.

A guided full-day tour is an easy way to experience the lagoon. Most itineraries combine the lagoon with a nearby cave, a viewpoint or a waterfall, and include transport, entrance fees and lunch. Guides know which lagoon is least crowded at which time of day, and they can organise a swim, a short walk to a cave and a stop at a local village. The price of such a tour is usually modest compared with arranging transport on your own, since the lagoons are several kilometres from town and the roads can be rough.

Plan to arrive early or late. Midday is busy and hot, and the lagoons can feel crowded when tour groups arrive together. The water is coolest and clearest in the dry season, from about November to March, when the sky is blue and the colours at their best. During the rainy season, water levels rise and the colour can turn cloudy, but the surrounding jungle is lush.

Check conditions before you go. Wear swimwear and quick-drying clothes, bring a towel, water shoes and a waterproof bag for your phone. Life jackets are often available near the swimming spots, and if you are not a confident swimmer, use them. Small entrance fees apply, and facilities include simple food stalls, bathrooms and changing areas.

Many visitors pair the lagoon with a stop at the cave at its edge, where steps lead up to a small shrine and a view over the fields. Water shoes help on the rocky edges, and a dry bag keeps your phone safe from splashes. Visit on a weekday if you can, and arrive at opening to enjoy the pool with fewer people.

Keep your valuables with the guide or in a locked bag, because the lagoon areas have simple facilities and you will want both hands free for swimming.