Today we exposed the whole surface of the big cut US -4058. It has an “L” shape and is visible for 4.7 m North South and 4 m East West; unfortunately we don’t have the real extension of the entire feature because it is bigger than the area. At the bottom of the big cut we found other holes, rounded and different in shapes and measures. They follow the same line of the trench and they can be interpreted as post-holes related with a wooden structure.