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This covers the same part of the river as tubing (and a more untouched part further upriver). Kayaking includes lunch and different caves. Some of the caves takes more than an hour to walk through, with bats and other creatures.
Across the river a 1.5-km path marked by white flags cuts through the fields towards the limestone mountains. The smallest hill has very rickety ladders, and somewhat dangerous, to aid in climbing to the top. Halfway up the mountain is a cave. Another 1 km along the path past the mountain goes through a small forest and arrives at a cave. A few sleepy Laotians guard the cave's entrance and will only charge 10,000 kip. However, on exit, they'll ask for 50,000 kip for the guide and 50,000 kip per lamp. A couple of men carving reeds with machetes are nearby so negotiation may be difficult.
A spring-fed lagoon at the bottom of "Golden Cave". Nice place to relax, swim and play on the rope swing. The waters are inhabited by a few hundred carp that will eat locally sold fish food out of your hand. The cave above requires a modest 100m hike up a makeshift bamboo ladder. Once inside, there is a short walk to the Sleeping Golden Buddha and glimmering stalactites about 300 m further inside. 10,000 kip entry and 10,000 kip to rent a head-torch, recommended if you go deeper into the "real" cave, past the Buddha. Guides for the cave are advertised at 50,000 kip. A number of imposters claim to be the Blue Lagoon — keep to the main road and you should be OK.
A couple of small shops on scenic hill, selling drinks and simple meals en route to Blue Lagoon and several caves. There is a mechanic shop where you can get air put in your tyres and basic repairs done. Also, this is the starting point for hiking up to Pha Ngeun Peak.
An extremely steep half-hour hike that offers a fantastic 360° view over the surrounding valley and karst mountains. The trail is in excellent condition, with steps, banisters, fences and cables on the more dangerous parts. Bring adequate footwear. Try to be at the entrance at around 16:00-16:30, so you reach the summit on time for the breathtaking sunset.
Very nice cave and superior to the one at Blue Lagoon. You might feel the entrance a bit tight at first time but when you get past that most parts are easy to walk. There is mud and water so be prepared if you wish to explore all the cave. Price includes head lamp.
Equal Education For All (EEFA) runs afterschool English classes for local children in Northern and Western villages of Vang Vieng. They are always looking for volunteers who can ideally stay for a month at least, but if you've only got a couple of days they may still want your help. Anyone is welcome to observe the classes, participate and contribute in any way you can. Look for Alex at Vang Vieng Organic Farm or message Equal Education For All on Facebook or @saelaovolunteer on Instagram.