AGGH has one runway, 06/24.
When looking at an aerial photo of said runway, I noticed something interesting:
(Image by Graeme Bartlett at Wikimedia Commons.)
My interest was piqued by seeing what looked suspiciously like a dilapidated additional length of runway, so I went into Google Maps to take a closer look, and it seems that the thing of interest is indeed a length of runway in a state of considerable disrepair. A set of old threshold markings (including the "06") is clearly visible, as well as what appears to be a displaced-threshold chevron. Right at the end of the pavement, there's what looks like a VOR station:1
Runway 06/24 at AGGH is currently 7218 feet (2200 meters) long. However, if the approximately 3000 feet (915 meters or so) of dilapidated runway to the west-southwest of the current arrival end of runway 06 were included, the runway would be over 10,000 feet long and able to safely accommodate considerably-larger aircraft:
It appears that runway 06/24 was shortened significantly at some point for some reason. When and why?
1: It looks like the VOR station (if, indeed, that's what it is) was most likely a later addition taking advantage of the shortened runway (as opposed to having been the original reason for shortening of same), given that, in the first image, the disused segment of runway is already visibly-considerably-degraded, indicating that that photo was taken after said runway segment had already been out of use and no-longer-maintained for a considerable time, but there is no trace of the VOR(?), nor even any signs of construction work at its location, indicating that the looks-like-a-VOR was built there long after that stretch of the runway'd been abandoned.2
2: Besides, putting in a new VOR would hardly, in itself, have necessitated removing part of the runway, since there's lots of empty space elsewhere on the airport grounds where one could've been put.