A mysterious metal monolith has reportedly been discovered on a heath in the Netherlands. The sighting comes after similar structures were found in the United States, Romania and Britain, reported AFP.

Hikers found the object on Sunday on a private land near the Kiekenberg nature reserve in northern Friesland province, a spokesman for the Dutch Forestry Commission said, as per AFP reports. 

A similar-looking object appeared a short while in the Utah desert late last month, after which two others cropped up in southern California and Romania days later. Another structure appeared on a beach on the Isle of Wight, off the south coast of England on Sunday.

Also read: Mysterious monolith in US desert reportedly disappears

“I walked up to it, but there was nothing to be seen around the monolith. Just as if it was placed from above,” hiker Thijs de Jong, the first person to find the obelisk, reportedly told Omrop Fryslan, adding that it would “certainly have needed two or more people” to place it,” as per AFP reports.

The appearance of the Utah object last month sparked rumours of alien visitations, as the structure bore a resemblance to the black monolith in the famed science-fiction film ‘2001: A Space Odyssey’.

Responsibility for the Utah installation has been claimed by an anonymous art collective.