We report on the observation and characterization of the dynamics of one-dimensional granular kinks in shallow granular layer subjected to an air flow oscillating in time. We characterize experimentally the properties of this extended solution and present results of the appearance of an effective drift as a function of the inclination of the experimental cell, which can be understood using a simple phenomenological amplitude equation to describe the onset of these solutions, their morphology, dynamical properties and the pinning-depinning transition of one-dimensional granular kinks.