This document defines and discusses the key elements and features of an epic poem. It states that an epic is a long narrative poem that tells of heroes and their deeds, often involving the intervention of the gods. It notes epics typically have a heroic main character, vast settings that are important to a culture's history, and include divine beings and places. The document also explains that epics begin with an invocation to a muse, contain elaborate similes, and focus on subjects of national significance.