Alton/St Louis, United States
Dig straight through the Earth and the nearest airport to where you come out is Perth Jandakot Airport, Australia.
of the world's airports sit lower than ALN.
| Runway | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 11 / 29 | 8,099 ft 2,469 m | 150 ft | Asphalt | Lit |
| 17 / 35 | 6,500 ft 1,981 m | 100 ft | Asphalt | Lit |
A runway is named after its compass heading divided by ten: 09 points east (090°) and 27 west (270°). L, C and R mark the left, centre and right of parallel runways.