Looking across a shingle beach towards the natural arch Durdle Door in Dorset, England, UK
Double arch stone bridge at Ponte dei Salti with waterfall, Lavertezzo, Verzascatal, Ticino, Switzerland
Euphrasian Basilica arcades and tower view, UNESCO world heritage site, Poreč, Istria, Croatia
Elephant shaped rock arch in Sahara desert, Tagant Region, Mauritania
Bow Fiddle Rock natural sea arch near Portknockie, Moray, north-eastern coast of Scotland, UK
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