| Answer | Crossword Clue |
|---|---|
| EREBUS | Antarctic observatory mount |
| PALOMAR | Mount .... Observatory |
| WILSON | Mount ... Observatory. |
| PALOMAR | Mount ..., California observatory site |
| PALOMAR | Mount ... (California observatory site) |
| EREBUS | Mount .. (Antarctic volcano) |
| EREBUS | Mount ... (active Antarctic volcano) |
