Into Thin Air

2. any line formed by abutting edges
6. conforming to beliefs, attitudes or modes of conduct
7. wishing evil or harm to others
8. demanding or requiring vigorous exertion; laborious
11. to become used to something;to adjust or adapt
13. then or slender, weak
14. a large irregularity of glacial ice, as a pinnacle found in a glacial crevasse
17. any prop or support
18. not perfectly balanced or even

1. a spiked iron plate worn on boots for aid in climbing or to prevent skipping on ice
3. a large mass of snow, ice detached from a mountain slope and sliding downward
4. foreboding; threatening
5. pertaining to or of a nature of phantasm; spectral
9. the entire stock of skills, techniques, or devices in a filed or job
10. something that is constantly changing
11. to fascinate or charm
12. like crystal clear or transparent
15. an upward movement; a rising movement
16. twilight or dusk