A drought in Ireland may have caused some crops to die, but there has been one positive – for historians at least.
In Brú na Bóinne, the disappearing crops exposed a long forgotten henge, which has not been seen for years.
The circular design was spotted by photographer and author Anthony Murphy who was flying his drone nearby above the site when he accidentally stumbled upon it.
The pattern is 150 metres (492 ft) in diameter, but experts are unsure what its purpose is.
Mr Murphy said on his blog: “Archaeologists are calling it a once-in-a-lifetime find.
“The last time drought conditions like this might have allowed such features to be visible was in 1976.”
Archaeologists are now examining the site, and study leader Clíodhna Ní Lionáin from University College Dublin believes that Ireland’s first farmers may be responsible.
He told the Irish Times: “In terms of designing these monuments, they were really good architects, engineers and also astronomers.
“And we can also see from what the art we have here they were amazing artists as well. Even though we don’t know what this art means, everyone who comes here is struck by this art.”
Co-discoverer and fellow drone photographer Ken Williams explained the discovery on his blog: “What we were looking at seemed too good to be true.
“We moved in closer to look at it in detail, [and] we could see for certain that this was the colouration of standing crops that had not been interfered with. What we were looking at was beneath, within the soil, not in the crops themselves.”