noun, noun which may take the genitive case particle 'no'
on the island; within the island; island-wide
Refers to something happening or existing on a specific island, often contrasted with 島外 (off-island). Used as a noun or with の to modify another noun.
See also: 島外
島内の交通手段はバスだけです。
The only means of transportation on the island is the bus.
島
I joined a tour around the island.