Children play amid icebergs on the beach in Nuuk, Greenland, June 5, 2016. (Photo by Alister Doyle/Reuters)

Participants run through coloured powder during the Colour Run race in Moscow, Russia on June 5, 2022. (Photo by Maxim Shemetov/Reuters)

An Extinction Rebellion activist takes part in a protest in Berlin, Germany on October 5, 2020. (Photo by Michele Tantussi/Reuters)

Yang Estrada, 5, plays with a crab on the street in La Panchita, Cuba on May 28, 2022. (Photo by Alexandre Meneghini/Reuters)

Palestinians react as they gather at the site of an explosion, following Israeli strikes in Gaza City on August 5, 2022. (Photo by Mohammed Salem/Reuters)

A dog waits as his companion fills out their ballot at Eastern Market in Washington, DC, on November 5, 2024. (Photo by Allison Robbert for The Washington Post)

Miley Cyrus attends the 82nd Golden Globe Awards in Beverly Hills, California, U.S., January 5, 2025. (Photo by Daniel Cole/Reuters)

Located in East Java, Indonesia, Kawah Ijen is a volcano is home to the largest acidic crater lake in the world. What turns the waters of the lake in the 1 km caldera its beautiful turquoise color are the highly sulfuric gases emitted from the volcano underneath.