Complex sentence: The plaza is triangular in shape, with a large cement lot at the southern end, normally surrounded by flower vendors, which serves as ground zero during the Les Falles when the fireworks of the Mascletà can be heard every afternoon.
Split into simpler sentences: The plaza is triangular in shape, with a large cement lot at the southern end, normally surrounded by flower vendors. It serves as ground zero during the Les Falles when the fireworks of the Mascletà can be heard every afternoon.