In fiction, especially fantasy, it's common for there to be legends of events that happened thousands of years ago. In ASOIAF, by George R.R. Martin, there are myths about a mini ice age like event called the long night, which happened something like 6,000 years before the series. This makes me wonder, is there anything analogous to this in our world?
In short, among myths that we can link to a real event, what's the oldest corresponding event?
Hi there. While you are waiting for a more comprehensive answer, you might want to take a look at this discussion about this very topic from a few years ago.
The consensus seems to be (and this agrees with what I know), that Australian Aboriginal oral histories likely record major climatic and geological events that occurred more or less near the end of the Pleistocene, somewhere about 10-15 thousand years ago.