11715
In the United States , it can be found as far north as the northern foothills of the Brooks Range in Alaska , where road margins and gravel pads provide islands of well-drained habitat in a region where soils are often waterlogged due to underlying permafrost .
 United States, Brooks Range, Alaska
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:
 United States, Brooks Range, Alaska