 Live crib walls are structures that resemble that of a wooden log cabin built into a streambank and rilled with natural materials such as soil, dormant wood cuttings, and rock.The live crib wall is able to fortify stream banks with the combination of the sturdy log structure and the root mass that will sprout from the wood cuttings and take hold deep in the bank, armoring it from erosion.Although quite labor intensive, cribwalls can last for decades and provide excellent aquatic habitats under the surface of the body of water.