The land suddenly grew to thousands of graves that caused scientists a headache
No one has found the reason why thousands of earth mushrooms rise like giant bubble wrap.
On a steppe region near Olympia, Washington, USA, there are thousands, thousands of graves sticking out of the ground like bubbles. These holdings are called Mima tombs.
Mima's tomb is about 2 meters in size, first discovered in 1841 by the explorer Charles Wilkes. Since then, Mima tombs have become a fascinating mystery for scientists.
Thousands of Mima graves floated on the ground.
At first, Wilkes thought this was the grave of ancient Indians. However, when digging up, there was nothing inside. These Mima graves have been around for thousands of years but no one can determine the cause of the large number of graves. There have been many assumptions made such as earthquakes, glaciers or aliens, but there has not been any convincing conviction.
Mima graves appear in many parts of the world. There is a place called mound mound , where there is a place called mum mound or small hill , . The shape and size of these mounds also vary by region. In some places, there is also coal, organic matter, . in the mound.
At first, Mima's grave in Washington had nearly 900,000, a figure so terrible. However, according to the development of society, the number of mounds is decreasing and is in need of protection from the government so that this unique form does not disappear and disappear.
Close to a Mima grave.No one has yet solved the mystery of Mima's grave.
Mima graves usually have a diameter of 2m or more, the interior is mostly normal soil, nothing special.
Mima's grave has been around for thousands of years.
A river flows through the Mima grave in Washington, USA.
Mima grave into flowers.
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