The Rosetta Stone, discovered in 1799 in Egypt, became a key to deciphering ancient Egyptian hieroglyphs. This stone slab features inscriptions in three scripts: Greek, Demotic, and Egyptian hieroglyphs. By comparing the known Greek text with the Egyptian inscriptions, scholars such as Jean-François Champollion were able to unlock the mystery of hieroglyphic writing. The Rosetta Stone represents a significant breakthrough in Egyptology, allowing the translation of countless ancient texts and revealing insights into the rich history, culture, and beliefs of ancient Egypt.