Clue | Source | Date |
---|---|---|
Type of porous rock (obs) (4) | ||
Soft porous rock consisting of calcium carbonate deposited from springs rich in lime | Mirror Quiz | 09 Feb 2025 |
Porous limestone | The Telegraph Cross Atlantic | 20 Nov 2024 |
Soft porous rock consisting of calcium carbonate deposited from springs rich in lime | Mirror Quiz | 12 Nov 2024 |
Porous limestone created by precipitation (4) | The Guardian Quick | 25 Jul 2024 |
Porous rock (A, not F) | The Times Concise | 13 Jan 2015 |
Soft, porous rock | ||
Lime spring deposit | ||
Porous limestone | ||
Limestone deposite | ||
Porous rock | ||
Porous rock | ||
Geyseral deposit | ||
Porous rock. | ||
Volcanic rock. | ||
Soft, porous rock. | ||
Porous limestone. | ||
Volcano rock. |