Dikes

A dike is a geological feature formed when magma from beneath the Earth's crust forces its way into existing rock layers, creating a tabular or sheet-like intrusion that cuts across the layers. These formations can act as natural barriers within the Earth's crust. Dikes are important because they reveal details about volcanic activity and the Earth's interior processes, and they can influence the landscape and movement of underground resources like minerals and groundwater. Essentially, they are underground walls made of solidified magma, tracing the paths of past volcanic activity.