A ballerina from Kyiv City ballet prepares in the wings on stage during the opening night gala performance at The Theatre Royal in Bath, Britain on April 16, 2023. (Photo by Lee Smith/Reuters)

Ukraine's Taisiia Onofriichuk performs with the clubs as she competes in the rhytmic gymnastics' individual all-around qualification during the Paris 2024 Olympic Games at the Porte de la Chapelle Arena in Paris, on August 8, 2024. (Photo by Mike Blake/Reuters)

The fairy chimneys are seen with light illuminations created with different techniques in Cappadocia, Nevsehir, Turkiye on August 01, 2024. Fairy chimneys are formed by volcanic eruptions and erosions over millions of years and are considered as one of the unique characteristics of the geography. (Photo by Harun Ozalp/Anadolu via Getty Images)

A view of the cemetery where the graves of the soldiers who lost their lives in the Russia-Ukraine war are located as daily life continues in shadow of war in Kursk, Russia on August 18, 2024. (Photo by Vladimir Aleksandrov/Anadolu via Getty Images)

A boy collects drinking water from a hand pump in Kutubdia, Bangladesh on March 30, 2016. Kutubdia is one of many islands affected by some of the fastest recorded sea-level rises in the world. The island has halved in size in 20 years. (Photo by SIipa/Rex Features/Shutterstock)

Tommy Lindsey holds an enormous maple leaf that he found in Mount Vernon, Wash., October 28, 2013. Lindsey was walking with his family when he picked up the leaf that is more than two feet from stem to tip and more than 21 inches wide. (Photo by Frank Varga/The Skagit Valley Herald)

Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).

Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.