Unfortunately, the proper authorities taking charge meant that someone would have to live on the deserted island permanently to keep law and order.

Fortunately, there were a number of people who wanted to live on a deserted island.

Unfortunately the powers that be permitted on the island only enough permanent residents that would be acceptable for an average Antarctic polar station.

Fortunately, the group that went got along very well and built a nice community.

Unfortunately, the small community of geologists, environmentalists and other technical experts had to obey sometimes onerously strict laws about garbage disposal etc.

Fortunately, those laws did help keep the settlement clean and orderly.

Unfortunately the tourists were expected to keep the same laws, which meant that they weren't permitted to litter the island with rubbish they had bought on the ships.

Fortunately very few tourists could afford the cost of visiting the island, so there wasn't much actual litter to worry about.

Unfortunately, with a drop in demand, there was no longer any way of transporting rubbish off shore, or bringing in goods and water from the outside world, so the island was abandoned.

Fortunately, that allowed the island's ecosystem to restabilize.

Unfortunately, where there are volcanoes there are active faultlines and so the poor island was subjected to earthquakes, a cyclone or two and then another volcanic explosion.

Fortunately, no one was harmed as no one was living on the island.

Unfortunately there was nobody to film or document the events, leading to a gap in knowledge which could have affected the nearest islands.

Fortunately, there remained a record that the island ever existed at all, and the findings of the scientific team which once lived on the island.

Unfortunately, the scientific findings were mixed with the very unscientific journals of multiple residents.