| ACROSS 1. a natural upward projection of the earth's surface, higher and steeper than a hill and often having a rocky summit. 4. any hard mass of consolidated mineral matter. 5. a fracture in the earth's crust 6. a mass of water or ice particles visible in the sky 8. the scientific study of caves, esp in respect of their geological formation, flora and fauna, etc | DOWN 1. any substance obtained by mining, for example the gold. 2. a sudden release of energy in the earth's crust or upper mantle, usually caused by movement along a fault plane or by volcanic activity and resulting in the generation of seismic waves which can be destructive 3. a large sea wave produced by a submarine earthquake 7. hot molten rock, usually formed in the earth's upper mantle |
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