This ninjutsu defends oneself against an incoming attack by creating a solid wall of earth. Chakra is converted to earth within the body and then spit out. This earth then instantly rises up and takes form. The barrier itself is also coated with chakra, making its strength incomparable to that of a normal mud wall. Because of the earth's special characteristics, the wall is highly resistant against, for instance, fire and water. Also, for a Hokage-class shinobi it is possible to create a vast volume of earth...!!
Kakashi's use of this technique differs from that of the Third Hokage in several ways. Rather than spit out the materials for the wall, he manipulates pre-existing earth. Additionally, his wall is composed of bulldog sculptures. The greatest deference is in its function: instead of creating the wall to defend himself, Kakashi forms it behind an opponent to box them in and prevent escape.