Across
- 4. A vent or opening in the Earth's crust through which molten rock, ash, and gases erupt, often creating a conical or domed mountainous structure, and associated with volcanic activity and geological processes such as subduction or mantle plumes.
- 5. A barren, arid, and often sandy region characterized by sparse vegetation, extreme temperatures, and minimal precipitation, typically receiving less than 250 millimeters (10 inches) of rainfall annually.
- 7. A natural underground chamber, typically formed by erosion or the action of water on soluble rock such as limestone, often characterized by narrow passages, chambers, and varied geological formations.
- 9. A raised area of land with a rounded or gently sloping summit, smaller in size than a mountain and usually lower in elevation, commonly formed by geological processes such as erosion, deposition, or volcanic activity.
Down
- 1. The area of land bordering a body of water such as a sea, ocean, lake, or river, characterized by the meeting of land and water, often featuring sandy or rocky beaches, cliffs, and coastal ecosystems.
- 2. A natural cascade or series of descending water over a vertical or near-vertical drop in the terrain, typically formed by the erosion of rivers or streams flowing over resistant rock layers, often creating scenic and picturesque landscapes.
- 3. A small, narrow body of flowing water, typically characterized by a steady current, originating from springs, runoff, or melting snow, and often feeding into larger rivers or lakes.
- 4. A low-lying area of land between hills or mountains, often formed by the erosion of water or glaciers, characterized by a flat or gently sloping bottom and bounded by higher terrain on either side.
- 6. Solid mineral material forming part of the surface of the Earth, typically exposed in layers or strata, ranging in size from small pebbles to large boulders, and composed of various minerals and organic materials.
- 8. A steep, vertical, or near-vertical rock face or escarpment, usually formed by erosion or faulting, commonly found at the edge of a plateau, mountain, or coastline.
