32070
Overland explorers entered the Willamette Valley through the scenic but treacherous Columbia River Gorge , and pioneers began to settle the valley in increasing numbers .
 Willamette Valley, Columbia River Gorge
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Willamette Valley, Columbia River Gorge