The Porcupine caribou herd migrates to the coastal plain in the Arctic National Wildlife Refuge ( ANWR ) in Alaska to give birth to their young .
The people of Old Crow are dependent on the Porcupine caribou herd for food and clothing .
The Porcupine caribou herd migrates to the coastal plain in the Arctic National Wildlife Refuge ( ANWR ) in Alaska to give birth to people 's young .
The people of Old Crow are dependent on the Porcupine caribou herd for food and clothing .