Em uma nota de rodapé de um autor para Os rios e balizas de Gondor , citado em O Companheiro de Leitores de Hammond e Scull , obtemos a resposta:
The special horror of the closed door before which the skeleton of Baldor was found was probably due to the fact that the door was the entrance to an evil temple hall to which Baldor had come, probably without opposition up to that point. But the door was shut in his face, and enemies that had followed him silently came up and broke his legs and left him to die in the darkness, unable to find any way out.
Esta nota de rodapé é anexada a uma discussão sobre o Halifirien , e também observa que:
The Men of Darkness built temples, some of great size, usually surrounded by dark trees, often in caverns (natural or delved) in secret valleys of mountain-regions; such as the dreadful halls and passages under the Haunted Mountain beyond the Dark Door (Gate of the Dead) in Dunharrow.
E a discussão em si observa que:
Quanto a por que Baldor queria ir até lá em primeiro lugar: talvez ele gostasse de um pouco de roubo de templo, talvez quisesse fazer um nome para si mesmo, ou talvez - como eu disse no meu comentário à resposta de Richard - "ele estava bêbado e decidiu fazer algo idiota"....a religious structure that was "ancient" could only have been erected by the Men of Darkness, corrupted by Morgoth or his servant Sauron.