| LAHAR | Destructive mudflow, composed of pyroclastic material and water, that flows down the slopes of a vol |
| POMPEIISKIING | Inadvisable activity traveling down the slopes of Mt. Vesuvius? |
| LAVA | It flows down the sides of a volcano |
| TWEED | Water that flows close to port and dock? |
| PUGETSOUND | Body of water that flows by Seattle (2) |
| VESUVIUS | The eruption of this volcano in 79 CE buried the cities of Pompeii, Oplontis, and Stabiae under ashes and lapilli and the city of Herculaneum under a mudflow. (8) |
| GLACIER | Any large mass of perennial ice that starts on land and slowly flows down a slope. The effects of global warming are causing these structures to shrink and disappear. (7) |
| SKIER | In 2015, Air New Zealand filmed a video on the slopes of a - - - dressed as a rugby ball (5) |
| PITCH | Field of play for rugby; or, the steepness of the slope of a roof (5) |
| RAKE | The slope of a stage from the back towards the footlights (4) |
| CONCRETE | Construction material made of cement, sand, stone and water that hardens to a stonelike mass (8) |
| SIDE | Long edge, position or surface to the left or right of an area, object or person, as opposed to its top or bottom; a page; a slope of a hill; a team; or, a television channel (4) |
| RISE | Counterpart of run in calculating the slope of a line |
| ATO | Start of a Vol. I heading |
| MOUNTAINMEADOW | Grassland on the slope of a peak (1998) |
| RESIDE | Live on the slope of a hill (6) |
| SKILODGE | Place to warm up after a run down the slopes: 2 wds. |
| SKI | Almost jump over the rope and move quickly down the slope (3) |
| KALAHARI | * Meal in New Zealand interrupted by destructive mudflow |
| GRADIENT | Slope of a line or a tangent at any point on a curve (8) |
