Vang Vieng is a great place to photograph because of the limestone karsts that pepper the countryside. Most backpackers who visit this part of laos are here for the tubing on the Nam Song. The accepted practice is to hire a tube, get driven a few kilometers out of town and float down the river drifting into every river-side bar (and there are a lot) for beer and snacks. To entice the drifters, the bars have built giant swings so that drunken punters can fling themselves into the river – it’s great fun.