With London sweltering on the hottest day of the year, some frozen delights wouldn't go astray, and they don't come much more spectacular than this stunning shot from Jórunn Sjöfn Guðlaugsdóttir. Taken in an 'ice cave in one of Iceland's and Europe's largest glacier Vatnajokull', Jórunn's shot is absolutely spectacular! Congratulations to Jórunn, and to all the other photographers featured in this week's Picks.
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