A motorist drives a car through a flooded expressway in Brooklyn, New York early on September 2, 2021, as flash flooding and record-breaking rainfall brought by the remnants of Storm Ida swept through the area. (Photo by Ed Jones/AFP Photo)

Wind gusts, blowing down King Street, twist umbrellas during Hurricane Ian in Charleston, S.C., on Friday, September 30, 2022. (Photo by Grace Beahm Alford/The Post and Courier via AP Photo)

American model Emily Ratajkowski wore a cut out red dress while taking her dog Colombo for a stroll in New York City on Friday, July 25, 2023. (Photo by Santi/Splash News and Pictures)

American actress and singer Selena Gomez shared the first pictures from her Bachelorette party in the last decade of August 2025. The 33-year-old actress and singer shared photos on Instagram marking the occasion. (Photo by Instagram)

British singer M.I.A. poses during the red carpet for the film ”Sacrifice” as the Toronto International Film Festival (TIFF) returns for its 50th edition in Toronto, Ontario, Canada, on September 6, 2025. (Photo by Mark Blinch/Reuters)

Russian Communist party activists and supporters carry portraits of Soviet founder Vladimir Lenin (R) and Soviet dictator Josef Stalin (L) as they attend a flowers-laying ceremony at the Lenin's Mausoleum on Red Square in downtown Moscow on November 7, 2021, marking the 104th anniversary of the Bolshevik Revolution also known as the October Revolution. (Photo by Dimitar Dilkoff/AFP Photo)

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.