https://commons.wikimedia.org/wiki/File:Nellie-rear-three-quarters.jpg A view of the Land Excavating Trenching otherwise known asWhite Rabbit No. 6,Cultivator No. 6orNellie. This machine was an underground tank developed in 1939-1940 and designed to travel across no-man's land in a trench of its own making. Nellie above ground rear three quarters view. https://en.wikipedia.org/wiki/Cultivator_No._6
