With a runway of smoking-hot coals laid out before them, residents in San Pedro Manrique, Spain, steel themselves as thousands of onlookers cheer them on. Although the walkers and the crowd perform very different roles during the annual June ritual, they report similar feelings: an ineffable feeling of togetherness, as if the entire group becomes one, said Dimitris Xygalatas, a cognitive anthropologist at the University of Connecticut, who witnessed the Spanish ritual years ago as a researcher.

Sandwiches are a flexible and scrumptious feast choice, cherished by individuals all over the planet for their benefit and interminable assortment.

Kanye West was scheduled to headline Wireless Festival, one of the U.K.'s biggest music festivals, this summer.