Stories from Portal Alpha to Portal Lambda describe the burning of the Earth by the Sun. Likely they refer to an extinction level solar proton event and geomagnetic field collapse which occurred possibly twice around 12,900 and 12,700 years ago.
Stories below Portal Lambda describe a global flood. Possibly they refer to a glacier wave flood that occurred following the solar conflagration.
The Ancient Greek Myth of Phaethon and the Sun Chariot
American Indian Legends of a Global Conflagration
Various Indian Legends of Burning and Catastrophe
Conflagration Legend of the Bella Coola Indians
Conflagration Legend of the Yurucare Indians (Earth Under Fire excerpt)
Conflagration Legend of the Ojibway Indians
American Indian Sun-Catcher Myths
Sun-Catcher Myth of the Dogrib Indians (Earth Under Fire excerpt)
Indian Legends of a Cave Life Era
Ancient Chinese Solar Conflagration Myth
Myths of Conflagration Followed by Flood
Myths of Atlantis from Plato's Timaeus
Ancient Greek Deucalion Flood Legend
Sumerian Flood Legend
Mt. Jefferson Flood Legend from the Indians of Oregon
Mt. Baker Flood Legend of the Squamish Indians of British Columbia
Skokomish Indian Flood Legend About the Olympic Mountains of Washington
Spokane Indian Flood Legend About Lake Missoula (Earth Under Fire excerpt)
Flood Legends of the Tahitians, Australian Aboriginees, and Siberian Voguls (EUF excerpt)
Various Other Flood Myths
The book Earth Under Fire reproduces the above myths and legends, as well as many more.