Very long time ago the people, frightened light, have gone down downwards, in bowels of the ground. They have found in huge caves a refuge and have lodged there, having based Cave cities. In a ceiling of caves they have turned houses and temples, having connected their bridges. At water they have based fishing settlements. Cave woods and the seas gave them food. They also have forgotten whence send, and they have forgotten the sun bright and the sky pure. They also thought, that live on an internal part of the stone world. But there were those who doubted... The Illustration to my book " the Wooden world ".