Cave fire speech is not a medium in the strict sense, though.
That means at least writing would have to have been available.
Gilgamesh epic might be a good candidate, I think.
Not a real monologue, but Humbaba mocks Gilgamesh and Enkidu for their hubris and lack of wisdom. He specifically attacks Enkidu, questioning his origins and his betrayal of the wild. He vows to slaughter them both and feed their flesh to the birds and beasts of the forest.
It was almost certainly spoken around a fire in a cave and has been lost to time before humans really recorded history
Cave fire speech is not a medium in the strict sense, though.
That means at least writing would have to have been available.
Gilgamesh epic might be a good candidate, I think.
deleted by creator
Not a real monologue, but Humbaba mocks Gilgamesh and Enkidu for their hubris and lack of wisdom. He specifically attacks Enkidu, questioning his origins and his betrayal of the wild. He vows to slaughter them both and feed their flesh to the birds and beasts of the forest.