Luang Prabang from Cardiff is feared to have drowned in the Mekong river . Picture editor for BBC Wales was on 'trip of a lifetime ' to Laos with friends . Cruise boat hit a rock in a stretch of rapids and sank within minutes . Huge search launched over 20km of river to try and find missing woman .
Johanna Powell from Cardiff is feared to have drowned in the Mekong river . Picture editor for BBC Wales was on 'trip of a lifetime ' to Laos with friends . Cruise boat hit a rock in a stretch of rapids and sank within minutes . Huge search launched over 20km of river to try and find missing woman .