| Answer | Crossword Clue |
|---|---|
| SHALE | Porous rock. |
| TUFF | Porous rock. |
| TUFA | Porous rock |
| TUFA | Porous rock. |
| TUFA | Soft, porous rock |
| TUFA | Soft, porous rock. |
| Answer | Crossword Clue |
|---|---|
| SHALE | Porous rock. |
| TUFF | Porous rock. |
| TUFA | Porous rock |
| TUFA | Porous rock. |
| TUFA | Soft, porous rock |
| TUFA | Soft, porous rock. |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.