Rivers shape the landscape through various processes such as erosion, transportation, and deposition. As a river flows, it erodes the land through the force of water and abrasion by sediment particles carried in the water. This erosion can create features like valleys, canyons, and river channels. Rivers also transport eroded materials downstream, carrying sediment and rocks to new locations. When rivers slow down, they deposit these materials, forming features like river deltas and alluvial plains. Over time, rivers can carve out intricate networks of channels and shape the surrounding land through their continuous flow and erosional power.