Caprona (also known as Caspak) is a fictitious island in the literary universe of Edgar Rice Burroughs's Caspak trilogy, including The Land That Time Forgot, The People That Time Forgot, and Out of Time's Abyss.
The Land That Time Forgot

PG1h 30m5.6

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In the midst of World War I, a German U-boat's navigational mistake results in its prisoners discovering a previously unknown land, Caprona, teeming with ancient life forms and civilizations.

The People That Time Forgot

PG1h 30m5.4

Watch The People That Time Forgot

A team of British explorers venture to Antarctica in 1919, only to stumble upon a mysterious ancient civilization, leading them to divert their search for a missing American explorer.

Caprona (Amicus) background