Eyjafjallajokull? That's easy for you to say...
With as many as 150,000 British tourists thought to be stranded abroad thanks to their flights being scuppered by Icelandic volcano dust, Lonely Planet has spied an opportunity.
The guidebook firm has announced that it's making 13 of its European city guide iPhone apps free until Thursday.
"Travellers stuck in unfamiliar places need access to practical information as well as suggestions on what to do whilst stranded," says travel editor Tom Hall.
The 13 cities are: Amsterdam, Barcelona, Berlin, Budapest, Copenhagen, Istanbul, London, Moscow, Munich, Paris, Rome, Stockholm and Vienna.
They usually cost £9.49, so it's a decent saving. Although be warned: if you're abroad and downloading apps over 3G, expect to pay through the nose in roaming charges.
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Although thankfully not as much as you'd pay for a taxi from Madrid to Calais, as some desperate Brits are having to do...
