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The highway travels across Whidbey Island , North Cascades National Park , the Okanagan Highland , the Kettle River Range , and the Selkirk Mountains .
 Whidbey Island, North Cascades National Park, Okanagan Highland, Kettle River Range, Selkirk Mountains
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Whidbey Island, North Cascades National Park, Okanagan Highland, Kettle River Range, Selkirk Mountains