What is a time capsule?

A time capsule is a cache of goods / information created to serve as a mode of communication with people in the future. These may include archaeologists, anthropologists or historians. The capsules are sometimes buried at sites where events are held. The term has been used since about 1939. There are two types of capsules: intentional and unintentional. Intentional time capsules are placed somewhere deliberately, to be accessed at a particular future date. Unintentional capsules are usually archaeological in nature.