San Marcos, United States
Dig straight through the Earth and the nearest airport to where you come out is Sir Charles Gaetan Duval Airport, Mauritius.
of the world's airports sit lower than KHYI.
| Runway | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 08 / 26 | 6,330 ft 1,929 m | 100 ft | Asphalt | Lit |
| 13 / 31 | 5,601 ft 1,707 m | 100 ft | Asphalt | Lit |
| 17 / 35 | 5,214 ft 1,589 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.