The dynamic behavior of land-based and marine-terminating glaciers depends on processes at the ice-bed interface that are difficult to observe directly. However, these processes are crucial for understanding ice flow and the development of landscapes under past and future climates. This session includes contributions that focus on glaciological, geomorphic, and hydrologic phenomena at glacier beds. Processes of interest include basal slip over soft and hard beds, ice and bed deformation, subglacial hydrology, subglacial erosion and sediment transport, and the development of subglacial landforms and sediment assemblages. We invite a range of approaches that address the spatiotemporal scales of these processes, including field and geophysical observations, laboratory experiments, sedimentological and morphometric studies, and modeling efforts.