I couldn’t believe my eyes: a giant shell twisted in a spiral was floating across the blue sky. In these, I saw, sea mollusks live. Only this one is the size of an aircraft carrier and coldly gleams like black steel in the rays of the rising sun. There was a distant clang, as if a huge celestial knight was buttoning up a steel shell. The shell slowly turned on its edge. The lower ring trembled and two more came out. The latter, with a wide dark bell, aimed at the ground floating below...