| Answer | Crossword Clue |
|---|---|
| COALMINE | Underground work site |
| EXCAVATE | Work underground |
| DITCHDIGGER | Laborer used for underground work? |
| DITCHDIGGER | His work may take him underground |
| SILO | Underground launch site |
| SILO | Underground missile site |
| CATACOMB | Underground burial site |
| SILO | Underground missile launch site |
| WONDERLAND | Site of underground adventures |
| ALTAMIRA | Underground art site in Spain |
