VALLETTA, Malta -- The Azure Window, a natural rock arch which jutted onto the sea off Malta and was a backdrop for the “Game of Thrones” TV series, has collapsed in a storm.

Malta Prime Minister Joseph Muscat tweeted his “heartbreaking” sadness at the loss Wednesday of one of the main tourist attractions on the island of Gozo.

Tourists walk on the Azure Window, a 50 metre high rock arch, at Dwejra Point cliffs on the west coast of the Maltese island of Gozo on Sept. 23, 2016. REUTERS/Darrin Zammit Lupi/File photo

No one was injured.

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Geologist Peter Gatt said the limestone pillar supporting the arch gave way. He attributed the collapse to years of erosion by both under- and over-ground sea swells.

The window also served as a backdrop in the 1981 movie “Clash of the Titans.”

With parts of the rock formation crumbling over the years, the government last month enacted €1,500 fines ($2,300) for anyone caught walking across the arch.