I: Stretch of rampart, Cistern and Lower Terrace

In this area you can see some elements, such as the badly damaged remains of a cistern, a lower platform and the remains of a stretch of wall. 

The cistern is one of the six elements documented as part of the hydraulic system that would supply the inhabitants of the castle. It lies half buried, presents an edge vault ceiling, and walls delimit a space of 8.50 m long and 4.80 m wide. The left side wall (a) is buried from the current level of the ground, while the wall (b) serves as a retaining wall of a lower platform (c) that connects with the remains of a stretch of wall (d).