Amid a roar of engines and clouds of dust, desperate migrants clamber into pickup trucks in a remote Afghan frontier town, ready for a perilous drive through the desert. They have only one goal -- to reach Iran. Afghanistan has been plunged into financial crisis following the Taliban takeover six months ago, worsening an already dire humanitarian situation after decades of war. Many Afghans are scrambling to leave the country for Iran or beyond in search of work to send money back to their families. IMAGES AND SOUNDBITES