A boy performs a masked dance as he participates in a parade during the National Encounter of Mask festival in Barva de Heredia October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





Boys perform fire-breathing at a parade during the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





A boys speaks to his mask-wearing brother at a parade during the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





People wearing masks dance as they participate in a parade during the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





People wearing masks dance as they participate in a parade during the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





A boys wears a mask as he takes part in a parade during the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





A boy performs fire-breathing as he participates in a parade during the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)





Participants stand next to costumes before a parade celebrating the National Encounter of Mask festival in Barva de Heredia, October 30, 2015. (Photo by Juan Carlos Ulate/Reuters)