The expedition

More about The expedition

This is an excerpt from my fantastic story "The Stairway of Universum". This is from the last part of it, which is called "The black tetrahedron". I have not finished it yet.
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It was a time of returning the Apsyhoses. The space society fought with Apsychosis. The cybernetic system of the Earth was destroyed. But other events were happening. The group of scientists found an ancient underground building in the Middle East. The age of this building was more than ten thousand years.
They found four triangle plates of black volcanic glass with unknown symbols inside. The plates lay in different parts of the building in special stone boxes. They put these plates on the table together. After some time, they felt bad. The symptoms were similar to the effects of powerful radiation exposure. Two scientists died. One of them was in a very hard state. The woman, whose name was Alicia, saw a picture from which she became speechless. The air near the plates became dark and red at some distance. The plates rose in the air and formed a tetrahedron.
Alicia tried to film this scene, but the camera didn't work. She tried to phone her old friend, who was the engineer, but the phone didn't work as well as the camera. Alicia thought that plates emitted something. She moved one hundred meters away and tried again.
The black tetrahedron was growing in front of her eyes. It stopped growing after it was seven or eight meters high.
There was a small town nearby, but no one human was nearby at that time. They had a jeep and one more machine. The phone was silent. The scientist — a colleague of Alicia, who was ill, was in hospital in the town. She was alone.
Alicia sat into the jeep that stood fifty meters away. The phone turned on.
"Hello, Christian," Alicia said, "do you remember me?"
"I'm glad to hear you," Christian responded, "something happened, as I understand. You have a worried voice."
"You are an engineer, Christian, and work with materials with unusual properties," Alicia said, "Maybe you'll think that I draw crazy. But I don't know what to do now. We found an ancient building under the ground and an unusual artefact. Two of my colleagues died as if from radiation, and one is in a hospital now. This devil's artefact flies in the air and creates some atmospheric phenomena. I’m going from there because I fear. This thing became gigantic, and the phone with a camera doesn't work near this thing."
Christian would think about a prank, but he knew Alicia. He understood: she was scared by something and didn't joke. He didn't remember strange behaviour or empty fantasies from this woman who he knew from school. She became an archaeologist but didn't believe in mystical stories or aliens.
"I don't know, Christian," Alicia continued, "What can I do? Maybe I must phone the local authorities or my institute. And what can I say? Four triangle plates from volcanic glass are hanging in the air and form a tetrahedron with darkn