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More mystery monoliths have sprung up in far flung corners of the world. A shiny gold block has now appeared in a Cudinamarca, Colombia. Some followers of the curious phenomenon have speculated that it may be the "master monolith", capable of controlling the others. Those objects that it may be directing have increased in the past few days.
A silver column showed up over the weekend in Sulzbach, Germany, in a field close to a shopping centre. Locals in Ayllon, Spain were urged by authorities not to approach another that appeared in the ruins of an old church. A third was spotted today in the village of Baasrode in Belgium.
Also this weekend a group of hikers found a monolith on private land near the Kiekenberg nature reserve in northern Friesland province, Netherlands. The monoliths, which bare a resemblance to the foreboding structures that appear in Stanley Kubrick's classic 2001: A Space Odyssey, have now appeared in seven countries.
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As well as the original in Utah, one was stumbled upon in Batca Doamnei Hill in northern Romania and on Compton Beach on the Isle of Wight. Tom Dunford, 29, from Fishbourne, West Sussex, told the BBC that he created the structure "purely for fun".
He said: "If the aliens were to come down I think they'd go for the safest place which is the Isle of Wight in Tier 1. When I saw the first one pop up (in Utah) I thought it was brilliant, the second one popped up and I had a text from a friend which said 'You're the man that can do this on the island'."
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The National Trust said it has placed rangers at the beach to prevent any overcrowding as people have been travelling to the site to take photographs. The first metal edifice was found planted in the ground in a remote part of Utah at the end of November. It disappeared just days later, and two other shining metal towers later appeared in Romania and Southern California, with others turning up in other countries including Spain, Germany and Colombia.
An anonymous collective called The Most Famous Artist has taken credit for the monoliths in Utah and California. It posted an image of the Utah monolith on Instagram, with a Sh4.6million (£34,000) price tag.