A pair of cyclists take photos as the sun rises over the Atlantic Ocean, Thursday, October 3, 2024, in Bal Harbour, Fla. (Photo by Wilfredo Lee/AP Photo)

Jamie Lee Curtis on Wednesday, January 8, 2025 took a trip back to the eighties on The Tonight Show to recreate her iconic aerobics movie scene from the film Perfect, featuring host Jimmy Fallon as John Travolta’s character. (Photo by Todd Owyoung/NBC via Getty Images)

An Afghan girl jumps off the wall of a small cemetery in Kandahar on July 29, 2022. (Photo by Daniel Leal/AFP Photo)

A couple embrace in silhouette at Craigyhill loyalist bonfire in Larne, Co Antrim on Monday July 11, 2022, on the “Eleventh night” to usher in the Twelfth commemorations. (Photo by Liam McBurney/PA Images via Getty Images)

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.

A couple wearing protective masks take a picture of a rose on Valentine's Day in Kuala Lumpur, Malaysia on February 14, 2022. (Photo by Hasnoor Hussain/Reuters)

Lola, owned by Kate Hansen, of Des Moines, Iowa, waits to be judged at the annual Drake Relays Beautiful Bulldog Contest, Monday, April 25, 2022, in Des Moines, Iowa. The pageant kicks off the Drake Relays festivities at Drake University where a bulldog is the mascot. (Photo by Charlie Neibergall/AP Photo)

A killdeer (Charadrius vociferus) chick on sand dunes in Pacific Grove, California, US on June 21, 2023. The killdeer gets its name from its shrill, loud call. (Photo by Rory Merry/ZUMA Press Wire/Rex Features/Shutterstock)