Old Icelandic writings, or EDDAS, are a collection of ancient Norse poems and stories written in the 13th century. They provide insight into the beliefs and customs of the Viking Age and are an important source of information about Norse mythology. The EDDAS are divided into two parts: the Poetic Edda and the Prose Edda. The Poetic Edda is a collection of mythological and heroic poems, while the Prose Edda is a handbook for skaldic poetry. Both works are essential to understanding Old Norse literature and culture.