"It can't be possible," said Bolton, "that there is an undiscovered and uncharted island anywhere in the world."

According to another, "A desert island is a small tropical island, where nobody lives or an undiscovered island."

Soon afterwards, Christian decided to sail away to an undiscovered island to evade capture by the British navy.

He exulted in himself, like an adventurer on an undiscovered island.

He was not, as the other traveller seemed to be, a savage inhabitant of some undiscovered island, but an European.

The term "desert island" therefore typically refers to an undiscovered island.

"Basically the world is well-mapped; there are no undiscovered islands."

Both are so isolated you feel you have washed up on an undiscovered island.

The thrill of being the first man to set foot on the undiscovered island?