enviroment
environmental
affect
alpine
attack
bark beetle
beatles
beetle
biology
botany
climate
climate change
damage
dead
dendroctonus ponderosae
destroyed
dry
eaten
ecology
effect
epidemic
forest
fragility
global warming
high elevations
hiking
illness
infested
insects
lodgepole pine
lodgepole pine trees
mountain
mountain pine beetle
nature
north america
outbreak
outdoor
peak
pests
plant
ponderosa
rock
rocky
rocky mountain national park
snow
spring
summer
summer time
summit
tree
wilderness
woodland
woods
worm
定額
Forest eaten by pests. Dead woods in spring in Central Cascade Mountains near Leavenworth and Seattle. Washington. United States.の素材 [FY31079816137]
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