英文關鍵字
barrendry
copper
decay
dig
dirt
earth
ecological
ecology
environment
environmental
excavation
geological
geology
hole
landscape
mine
minerals
mining
mountain
mountains
operations
ore
usa
uta
utah
英文關鍵字
barrendry
copper
decay
dig
dirt
earth
ecological
ecology
environment
environmental
excavation
geological
geology
hole
landscape
mine
minerals
mining
mountain
mountains
operations
ore
usa
uta
utah