An archaeologist comes to Oklahoma to explore one of the mounds that inspires strange fear in the locals and finds a strange scroll. In it, the Spanish conquistador and adventurer Panfilo de Zamacona talks about a mound through which one can get to the dying underground cities of " Living Under the Earth” to meet their immortality and... death

This story is part of the “Cthulhu Mythos” cycle. Almost the entire work was written by Lovecraft as a “literary negro,” and Bishop only owned the idea and a one-line synopsis.