SANDSTONE
| Date | Clue |
|---|---|
| 2022-10-16 | Rock commonly used in asphalt |
| 2014-12-21 | Zion National Park material |
| 2009-03-04 | Grand Canyon material |
| 2006-01-03 | Sound quality for George? |
| Date | Clue |
|---|---|
| 2022-10-16 | Rock commonly used in asphalt |
| 2014-12-21 | Zion National Park material |
| 2009-03-04 | Grand Canyon material |
| 2006-01-03 | Sound quality for George? |