Rustling through fallen golden leaves, locals in a forest outside Arslanbob in the Kyrgyz mountains were scurrying for walnuts -- an ancient pastime and economic lifeline for the region.

But the forest, the world's largest wild walnut grove, has for years been slowly fading -- hit by the overgrazing of livestock, illegal logging and rising temperatures.

Originally published on doc.afp.com, part of the BLOX Digital Content Exchange.