Tree throw

A tree throw or tree hole is a bowl-shaped cavity or depression created in the subsoil by a tree. A tree throw or tree hole is a bowl-shaped cavity or depression created in the subsoil by a tree. They are formed either by the long term presence and growth of tree roots or when a large tree is blown over or has its stump pulled out which tears out a quantity of soil along with the roots. The resultant hole will often slowly fill with organic material and can be identified during archaeological fieldwork.