This paper exploits a unique feature of China's history, the "sentdown youth" (SDY) program, to study the effects of access to internal migration. We show that temporary migration due to the SDY program created lasting inter-province links. We interact these links with two time-varying pull measures in potential destinations. Decades after the SDY program ended, increased access to migration in cities that sent SDY leads to higher rates of migration from provinces where those SDY temporarily resided. We find that improved access to migration leads to lower consumption volatility and lower asset holding. Furthermore, household production shifts into high-risk, high-return activities.