Same moment in the longest migration

On the long migration of Porcupine Caribou which is said as one of the longest migrating animal in the world, they surrounded me in snow fall. I've been waiting for their spring and fall migration in Yukon Territory for 10 years. I always remember someone's expression that hitting thousand's of them is like one of seventh wonder of the world every time I miss bunch of them since I started waiting for them. This scene must be same since thousands years ago. Their fall migration seems being late in my sight for this 10 years. Finally my dream came true as tons of caribou surround me, but it became winter migration when I took this image. But I was still so happy being surrounded by them which are growing number herd in the sad situations of many herds are decreasing in North America. I hope they keep health of heard forever, myself have same opportunities again and other herds grow back again close future.