This is the moment a helicopter pilot films a series of mysterious circles imprinted in the sand on a remote UNESCO protected island.
The weird geometric shapes, which conspiracy theorists have attributed to alien activity, were filmed among the mangroves near Playa Bahamita on Isla del Carmen in the north-western Mexican state of Baja California.
In the video, a helicopter pilot films a series of circles joined by straight lines imprinted on the sand.
The clip has since gone viral on social media, with many viewers theorising UFOs must have visited the secluded area.
Reports said the footage was filmed by a pilot of the charter carrier Aeroservicios Especializados S.A. de C.V. which offers commercial helicopter trips.
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However, researcher Arturo Zaldivar Jimenez of the National Autonomous University of Mexico (UNAM) said the circles are part of a university project launched 10 years ago to restore the mangrove area.
He added 600 hectares have been recovered since the project began.
Zaldivar Jimenez told local media: “They are circular elevations which are part of the restoration work we are carrying out.
“We call them ‘cakes’ because of their shape.
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“They help the mangroves to replenish in a natural way.
“This is why the units in the video were created.”
The mangrove region reportedly started to dry out during the 1950s due to natural causes, damaging the soil in the area.
The island is protected within the Loreto Bay National Park which is part of UNESCO’s Islands and Protected Areas of the Gulf of California Mexican World Heritage Site.
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However, there are still YouTube users who prefer the paranormal explanation.
One person said: “They claim the circles are part of a restoration project, but that is a strange explanation.
“I think they are a message.”
Another conspiracy theorist wrote: “Identical circles appear without a decent explanation of who made them or why.
“I suspect aliens were involved.”
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