| EXOSPHERE | Earth's ____ begins at an altitude of about 400km |
| WARANDPEACE | Novel that begins at an 1805 soiree |
| TOLSTOY | Novelist who died at Astapovo train station, 400km southeast of Moscow, in 1910 (7) |
| LYNX | Helicopter used by the British military for 40 years, with a record top speed of 400km/h (4) |
| DARJEELING | Town in West Bengal at an altitude of 6,700 ft, site of the Chamong Estate and the Happy Valley Tea Estate where the "champagne of teas" is cultivated (10) |
| AREQUIPA | City in S Peru, at an altitude of 2250m, founded in 1540 on the site of an Inca city |
| SUCRE | Situated in the Andes at an altitude of around 2,810 metres, the constitutional capital of Bolivia; |
| NAIROBI | Situated at an altitude of approx 1,680 metres, the capital of Kenya (7) |
| QUITO | Capital city of Ecuador, in the Andes at an altitude of 2850 m (9350 ft) (5) |
| LAPAZ | Administrative capital of Bolivia, in the Andes at an altitude of approximately 3,660m (12,000ft) (2,3) |
| STRATUS | Cloud at an altitude of 2,000 to 7,000 feet |
| LOWEARTHORBIT | Orbit with an altitude of 2,000km above earth's surface (3,5,5) |
| SOARTO | Reach an altitude of |
| AIRSICK | Ailing at an altitude |
| HIGH | At an altitude (4) |
| ALPS | Wales had an altitude training camp in the Swiss - - - last summer... (4) |
| BIRDSEYE | As from an altitude or distance (5-3) |
| SAG | "The ___ Begins" (Weird Al's "Star Wars" parody of "American Pie") |
| DEATHZONE | Region of mountains including Everest and K2 at altitudes of 8,000m (26,000 ft) or more where there |
| LAHR | Star of Broadway's "Life Begins at 8:40" |