He also reveals to Bran that there are many men riding in chariots , but that they are invisible .
The man is Manannan mac Lir , and he tells Bran that he is not sailing upon the ocean , but upon a flowery plain .
man also reveals to Bran that there are many men riding in chariots , but that they are invisible .
The man is Manannan mac Lir , and he tells Bran that he is not sailing upon the ocean , but upon a flowery plain .