La Troca, the center for popular and traditional culture at Roca Umbert, celebrates its 20th anniversary with a festive day at the Plaça dels Recanvis. The event includes activities such as the Ball del Colom, a popular dance with Passaltpas, and a concert by the group Alosa. The day will conclude with a communal dinner provided by Blancs i Blaus. More information can be found here.