The mediastinum is the part of the thoracic cavity that contains the lung, the heart and its major blood vessels, the trachea, the thymus gland, and the esophagus. False lungs are located outside of the mediastinum.
Erlendr was a Nord warrior. He is a hero, and his ghost can be found inside the Hall of Valor in Sovngarde. He, along with Nikulas and Hunroor, was turned into a stone pillar at Brodir Grove by the wizard Grimkell while searching for Sovngarde. Ulfgar the Unending later avenged them by killing Grimkell.
Lar Gand was an explorer from the planet Daxam who sacrificed himself to save Earth. Lar, whom came to be known as Mon-El, was a member of the Justice League and friend of Superman in the modern era and is a member of the Legion of Superheroes in the future.