Thanks for this info, Tom; hadn’t known the island’s now deserted during the week.
I think there isn’t a proper “bunker”, but the former camp on western slope of the small hill – v near the police station – was made ready as shelter should there be an accident at nearby Daya Bay nuclear plant. As I recall, has iodine etc in case the island is affected by fallout (the iodine being normal, to help limit any uptake by bodies of radioactive iodine).
Martin