This amazing natural phenomenon is observed in various corners of the Earth. But so far no one can explain its reason clearly. We are talking about the so-called Moeraki boulders, also known as the “watermelons of Elijah the Prophet”. Someone takes them for dinosaur eggs, someone - for the fruits of ancient marine plants, and some even put forward the assumption that these are the remains of UFOs.
The phenomenon is really strange. Imagine an almost perfectly shaped stone or iron ball with a diameter of ten centimeters to three meters. If someone happens to come across such an "egg" split, then inside he will find a cavity with crystalline formations on the inner surface.
The most famous collection of these eggs is located in a fishing village in New Zealand. The balls lie right on the beach. Moreover, all stones have a different structure - some of them are impeccably smooth, others - like a tortoise shell, rough. Some are split into pieces or with huge cracks.
But in order to admire the "watermelons of Elijah the Prophet", it is not at all necessary to go to New Zealand. They are found in China, in Israel. There are the same round stones in Costa Rica, they are called "balls of the gods" there. These stones are considered man-made, they are called the "eighth wonder of the world" and they are under state protection. The largest “balls of the gods” in Costa Rica are three meters in diameter and weigh about 16 tons. And the smallest are no more than a children's ball, they are only ten centimeters in diameter. The balls are arranged singly and in groups from three to fifty pieces, sometimes forming geometric shapes.
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There are similar formations in Russia (although Russian "eggs" are not considered man-made). For example, mysterious stone balls were discovered in the village of Boguchanka in the north of the Irkutsk region. Locals are sure that this is a UFO, for the reason that the balls look like they are made of metal.
Where did this "wonder of the world" come from? Scientists reject the assumption that the stone balls are dinosaur eggs, for the reason that even the largest dinosaurs could not have such huge cubs. The appearance of some stone balls is due to the impact of glaciers. But as for the "iron UFOs" and hollow boulders inside, the official science considered that this is a geological formation, and even gave it its name - geodan - a closed cavity in any sedimentary or volcanic rocks. But these are all just assumptions. The age of most of these formations is, according to researchers, at least 60 million years.