| Answer | Crossword Clue |
|---|---|
| FEN | Will-o'-the-wisp site |
| IGNISFATUUS | Will-o'-the-wisp |
| IGNIS | ... fatuus (will-o'-the-wisp) |
| APOSTROPHE | Will-o'-the-wisp feature |
| ELISION | Will-o'-the-wisp feature |
| SWAMP | Will-o'-the-wisp locale |
| IGNIS | ... fatuus (will-o'-the-wisp). |
| SWAMP | Will-o'-the-wisp whereabouts |
| SWAMP | Will-o'-the-wisp locale, perhaps |
| SWAMPGAS | What causes a will-o'-the-wisp |
| nightfire | a fire burning at night; a will-o'-the-wisp |
| nightfires | NIGHTFIRE, a fire burning at night; a will-o'-the-wisp |
