The activity starts with a brief presentation and history of “human towers”. It includes a technical explanation of different elements, how the festivities are organised and the structure and inner workings of a “colla castellera”. Then, the team creates a “colla” by selecting a leader and its technical team. They form the “enfaixada” and the role-play starts. Rehearsal of the three parts of the castle: core (organisation of the core), trunk (techniques for climbing up and down) and rehearsal of the “pom”. Making a “tower”. Once you achieve it, there is a celebration!