In Greek mythology, Pandora opened a jar rather than a box. Hesiod’s original Greek account describes a pithos, a large storage vessel commonly used in the ancient Mediterranean for materials such as grain, oil, or wine.
The famous expression “Pandora’s box” arose much later through translation and artistic tradition. When the story entered Latin and then modern European languages, the vessel was rendered as a box or container, helping create the phrase now used for an action that releases many unforeseen problems.
Hesiod does not present Pandora as carrying a small decorative box in the modern sense. The large jar fits the practical storage vessels known in ancient Greek life and makes the story’s image more substantial than many modern illustrations suggest.
The jar is associated with the release of evils into the world. After Pandora closes it, one thing remains inside: hope. Interpretations differ over whether hope is humanity’s consolation or another part of Zeus’s design, but the vessel itself is clearly a jar in the earliest surviving account.