Lebor Gabála Érenn (often abbreviated as "LGE") is an old Irish mythology book. It tells stories about how Ireland was formed, who the first people were, and what kind of adventures they went on. In the stories, there are gods, warriors, and magical creatures who all worked together to create a great land. The stories explain why the Irish people have certain customs, beliefs, and cultures. They are exciting and excitingly creative stories that have been passed down through generations and told around the fire.