6 mayo 1894 año - The Land of the Changing Sun - WIlliam N. Harben
Descripción:
 Land of the Changing Sun (1894) is a utopian fantasy set within a 100 mile wide cavern found below the Atlantic Ocean 200 years prior and settled. The settlers found the atmosphere very rejuvenating, and also build an artificial changing sun to light their world. Two balloonists, an American and an Englishman, discover this world. 
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fecha:
6 mayo 1894 año
Ahora mismo
 ~ 131 years ago