Rescue workers scrabbled through rubble on Tuesday for villagers buried in their homes by a series of earthquakes that killed more than 2,000 people in rural western Afghanistan, but hope of finding survivors was fading fast. Volunteers have worked non-stop with spades and pickaxes in Herat province since Saturday's deadly magnitude 6.3 quake struck - followed by a series of powerful aftershocks - but some were turning to digging graves instead.