the traca

...and from the streets there was the scent of the flower market and the smell of burned powder from the firecrackers of the traca that ran through the streets exploding each noon during the feria. It was a line of fireworks that ran through all the city, the firecrackers linked together and the explosions running along on poles and wires of the tramways, exploding with great noise and a jumping from pole to pole with a sharpness and a crackling of explosion you could not believe...

-- Ernest Hemingway For Whom the Bell Tolls