This is a sample for your reference: Mystery is something that is unidentified, unknown or anonymous. It is not anything that is definite or specific. Mystery is something that is difficult or impossible to understand or explain. Mystery can also be defined as the condition or quality of being secret or strange about something. A mystery about a place, an event, or a person can be exciting to few and scary to others at the same time. Lot of researchers delve deep to unveil mysteries of our planet Earth. Some of the unsolved mysteries of the world include the existence of the city of Atlantis, giant stone balls of Costa Rica, the mystery of Yeti, etc

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