Dig straight through the Earth and the nearest airport to where you come out is Flores Airport, Portugal.
of the world's airports sit lower than HSM.
| Runway | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 08 / 26 | 4,337 ft 1,322 m | 98 ft | Asphalt | Lit |
| 17 / 35 | 2,621 ft 799 m | 60 ft | San | – |
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.