-
For the Gwich'in, the calving ground of the Porcupine herd is a sacred place.
CNN: mountain
-
Schaller himself had attempted to find the calving ground a year earlier, but his trek failed when his pack animals died.
NPR: Chang Tang's Endangered Antelope
-
The team spent two days photographing the calving ground and gathering data that would be used by conservationists to persuade China to protect the area.
NPR: Chang Tang's Endangered Antelope