South America's westernmost mainland point is in it (4)

I believe the answer is:

peru

(Other definitions for peru that I've seen before include "Mario Vargas Llosa's native land" , "Country of Lima, Cuzco and Paddington Bear" , "Land of the Incas" , "Paddington Bear's country of birth" , "Machu Picchu country" .)

I've seen this clue in the LA Times.

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