A mysterious monolith has reportedly appeared in Romania – after a similar structure disappeared from a desert in Utah.
The 4m (13ft) monolith has been spotted on Batca Doamnei Hill in the city of Piatra Neamt, according to reports from local media.
The appearance of the hollow structure, which has a triangular shape and is covered in a looping scrawl, has sparked speculation about its origin.
It bears a resemblance to the Utah monolith which was spotted in a remote cove two weeks ago, leading people to wonder if the monuments are linked.
In a bizarre twist, the Utah Bureau of Land Management said the structure had been removed without its knowledge on 27 November.
It had originally been spotted by state wildlife officials who were helping to count bighorn sheep from a helicopter earlier in the month.
It is unknown where these monuments have come from. Some have guessed it could be the work of a prankster inspired by science fiction novel 2001: A Space Odyssey.
In the book by Arthur C Clarke, a monolith appears on Earth and gives wisdom to a tribe of apes.