Uncontacted, Isolated Rainforest Civilization

This page is the CodyCross answer for the clue below from Treasure Island, Group 1033, Puzzle 5 (Contraband).

Question is: Uncontacted, Isolated Rainforest Civilization

and the answer is: LOSTTRIBE

Word Meaning:

LOST — simple past and past participle of lose

Definitions from Wiktionary.