| Answer | Crossword Clue |
|---|---|
| CHARON | Hadean ferryman. |
| SHADE | Hadean inhabitant |
| LETHE | Hadean river. |
| LETHE | Hadean river of oblivion. |
| EREBIAN | Of a Hadean way. |
| LETHE | Hadean river from which the dead drank |
| EON | The Hadean was the earth's first one |
| EON | The Hadean was the first one, ending about 4 billion years ago |
