It was the first of the accesses built and the first to be demolished at the end of the 19th century. For two centuries it was the entrance and exit for those who used the only means of communication at that time: navigation. It had no moat and ravelin, and in front of it there was a stake of soap. In the 1800s, two bays and a portal were annexed to it to house the sentries who guarded it, similar to the guard force in the powder magazine. In 1957 it was rebuilt, but it was not until 1997 that it was again joined by a wall canvas to the bastion of solitude.
