Hi I want to run a shellscrape activity for some kids, I was in the Infantry T.A. in the early 90's and the shellscrape was a common overnight shelter for 2 soldiers.
The basic hole dimentions were roughly the size of a poncho or a long double bed mattress 7ft x 5ft x 2ft.
The removed soil made a mound that surrounds the hole(apart from a small slope at the rear to crawl in and out),
The mound/wall at the front (facing the enemy) was slightly longer and had a built in shelf you could use as an arm rest.
The surrounding mound/wall aprox 1ft tall and wide gave the shelte