Across
- 4. Dark volcanic glass
- 6. Waterfall or a series of waterfalls
- 7. A mystery or puzzle
- 8. A long journey, especially by sea
- 9. A deep fissure in the earth’s surface
- 10. A sign or warning of something to come
Down
- 1. A feeling of fear or anxiety about something
- 2. Difficult to find, catch, or achieve
- 3. Sentimental longing for the past
- 5. Isolation to prevent the spread of disease