Ōkunoshima (Rabbit Island) 大久野島
From 1929 to '45 the army produced toxic gas here: maps left the island blank.
A small island in the Seto Inland Sea, administered by Takehara and reached by ferry from Tadanoumi. From 1929 to 1945 the Imperial Japanese Army secretly produced chemical weapons here (blister, tear, blood and vomiting agents) for use in war; the few resident families were evacuated and the island disappeared from the public maps of the time, left blank.
Hiroshima
Okunoshima Pier 2, Okunoshima Pier 1