On the western side of Mount Hood lies the longest glacier cave system in the contiguous United States. In 2012, these caves were mapped to a combined length of 7,166.8 feet by cave explorers Brent McGregor and Eddy Cartaya. Currently, the total passage length is hundreds of feet less. Glaciers are frozen rivers; they are always moving and changing... (Photo and caption by Josh Hydeman)

The Knights of Middle England equestrian stunt display team perform ahead of the first match on July 13, 2024. The British Beach Polo Championships, or “sand polo”, returns to the exclusive Sandbanks peninsula near Poole, Dorset. Spectators can appreciate the horsemanship, speed and gladiatorial nature of polo at the largest beach polo event in the world. (Photo by Max Willcock/Bournemouth News)

A performer dances at a housing exhibition in Wuhan, Hubei province, China, September 27, 2015. (Photo by Reuters/Stringer)

A couple sit on the terrase of a cafe in Istanbul as seagulls fly over them on September 10, 2019. (Photo by Ozan Kose/AFP Photo)

Carla Bruni attends the L' Oreal Party at the Beach of The Palais du Festival during the 51st Cannes Film Festival on May 13,1998 in Cannes, France. (Photo by Foc Kan/WireImage)

June 21: “World War Z”. Brad Pitt battles zombie apocalypse in $170 million film by “Quantum of Solace” director Marc Forster. This publicity photo released by Paramount Pictures shows, center, Brad Pitt as Gerald Lane in a scene from the film, “World War Z”, from Paramount Pictures and Skydance Productions in association with Hemisphere Media Capital and GK Films. (Photo by Jaap Buitendijk/AP Photo/Paramount Pictures)

Multicolored nets are set under olive trees to collect the olives on November 27, 2013 in Castagniers, southeastern France. (Photo by Valery Hache/AFP Photo)

Performers dressed as zombies arrive to the pier of the Excelsior Hotel on September 6, 2021 during the 78th Venice Film Festival at Venice Lido. (Photo by Yara Nardi/Reuters)