Pilgrims crowd around the Virgin of El Rocio during a procession around the shrine of El Rocio in Almonte, southern Spain, May 25, 2015. Every spring hundreds of thousands of devotees converge on a shrine to pay homage to the Virgin del Rocio during an annual pilgrimage which combines religious fervour and festive colour. REUTERS/Marcelo del Pozo

Pilgrims carry a girl to touch the Virgin of El Rocio during a procession around the shrine of El Rocio in Almonte, southern Spain, May 25, 2015. REUTERS/Marcelo del Pozo

Pilgrims pray in Quema river on their way to the shrine of El Rocio in Aznalcazar, southern Spain May 21, 2015. REUTERS/Marcelo del Pozo

Pilgrims push a carriage as they cross Quema river on their way to the shrine of El Rocio in Aznalcazar, southern Spain May 21, 2015. REUTERS/Marcelo del Pozo

Pilgrim, Maria Jose Valencia, 38, poses for a portrait on her way to the shrine of El Rocio in Donana National Park, southern Spain May 20, 2015. REUTERS/Marcelo del Pozo

Pilgrims attend an outdoor mass in the village of El Rocio in Almonte, southern Spain May 24, 2015. REUTERS/Marcelo del Pozo

Pilgrims en route to the shrine of El Rocio in Almonte, southern Spain May 22, 2015. REUTERS/Marcelo del P

A pilgrim holds a boy in the shrine of El Rocio in Almonte, southern Spain May 22, 2015. REUTERS/Marcelo del Pozo

Pilgrims make a stop on their way to the shrine of El Rocio in Donana National Park, southern Spain May 20, 2015. REUTERS/Marcelo del Pozo

A pilgrim holds a girl as a man plays music on their way to the shrine of El Rocio in Donana National Park, southern Spain May 20, 2015. REUTERS/Marcelo del Pozo

Pilgrims from the Ronda brotherhood push a cart on their way to the shrine of El Rocio in Coria del Rio, southern Spain May 19, 2015. REUTERS/Marcelo del Pozo

Pilgrims are seen in a carriage on their way to the shrine of El Rocio in Donana National Park, southern Spain May 20, 2015. REUTERS/Marcelo del Pozo

Pilgrims from the Fuengirola brotherhood pray as they cross Guadalquivir river on a boat on their way to the shrine of El Rocio in Coria del Rio, southern Spain May 19, 2015. REUTERS/Marcelo del Pozo

Pilgrim, Inma Jurado, 36, poses for a portrait on her way to the shrine of El Rocio in Donana National Park, southern Spain May 20, 2015. REUTERS/Marcelo del Pozo

Pilgrims from the Fuengirola brotherhood stand on their way to the shrine of El Rocio in Coria del Rio, southern Spain May 19, 2015. REUTERS/Marcelo del Pozo

Pilgrims from the Ronda brotherhood make their way to the shrine of El Rocio in Coria del Rio, southern Spain May 19, 2015. REUTERS/Marcelo del Pozo

A pilgrim stands before starting her way to the shrine of El Rocio in Sanlucar de Barrameda, southern Spain May 20, 2015. REUTERS/Marcelo del Pozo

Pilgrims from the Fuengirola brotherhood sit on their way to the shrine of El Rocio in Coria del Rio, southern Spain May 19, 2015. REUTERS/Marcelo del Pozo

Pilgrims from the Fuengirola brotherhood embrace on their way to the shrine of El Rocio in Coria del Rio, southern Spain May 19, 2015. REUTERS/Marcelo del Pozo

Pilgrims of La Puebla del Rio brotherhood make their way to the shrine of El Rocio in Aznalcazar, southern Spain May 21, 2015. REUTERS/Marcelo del Pozo

A pilgrim speaks on the phone as she takes a rest on her way to the shrine of El Rocio in Aznalcazar, southern Spain May 21, 2015. REUTERS/Marcelo del Pozo

A pilgrim lights a candle in the shrine of El Rocio in Almonte, southern Spain May 24, 2015. REUTERS/Marcelo del Pozo