| Answer | Crossword Clue |
|---|---|
| sinkholes | SINKHOLE, a natural depression in a land surface |
| sinkhole | a natural depression in a land surface |
| cenote | deep natural well or sinkhole, esp. in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings |
| cenotes | deep natural well or sinkhole, esp. in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings |
| basinful | large or small depression in the surface of the land or in the ocean floor |
