Case file · High strangeness
Falcon Island vanishes
Falcon Island (Fonuafoʻou), a volcanic island in Tonga that first rose in 1885, grew to about 145 m high and then vanished beneath the sea after an eruption in 1949.
1949 CE · -20.32, -175.42 · status: explained
The account
It was first sighted as a reef by HMS Falcon in 1867. It appeared and disappeared several times as eruptions built it up and waves cut it down; its summit is now below sea level.