"The reception is overwhelmingly positive wherever we go," goat herder Michael Choi said in a recent interview.

“He tried to get permission from everybody and then gets blocked by a bunch of reindeer herders.”

A herder moves his goats and blackhead Persian sheep to market in Hargeisa, Somaliland.

After a major pipeline rupture five years ago, he started photographing and filming pools of oily water and heaps of blackened soil in locations in Unity State, including sites near Roriak, where the herders live.

The camel herders and small-scale farmers we met are on the front line of climate change here.