Mysterious night forest on the background of a full moonMysterious night forest on the background of a full moon
A bench in the park, next to it a lantern and a tree that hung its foliage so low, is a mysterious landscapeA bench in the park, next to it a lantern and a tree that hung its foliage so low, is a mysterious landscape
Нечто неразгаданное, ещё не познанное. Нечто скрываемое от других, известное не всем, секрет.