Air entrapment in soils and rocks strongly affects vadose zone processes, including water infiltration paths and rates and associated transport of nutrients or contaminants. Hence, this work aims to better understand the dynamics of entrapped air in the vadose zone in response to flooding events by conducting pore-scale flow experiments using micromodels coupled with multiphase flow modeling. In particular, the study will focus on the effect of sudden heterogeneity change, such as bedding, on the air clusters distribution and morphology. We hypothesize that the presence of beddings, mimicking geological depositional facies, will enhance air entrapment and, thus, the effect on limiting water flow through the vadose zone while, locally, resulting in highly channelized flows. Thus, these observations within the complex interfaces at pore-scale motivate further measurement of multiphase flow in response to entrapped air at the pore-scale and requisite numerical modeling.