Cameroonian para-athlete and taekwondo African champion Marie-Antoinette Ndassi (R) and Cameroonian taekwondo para-athlete Chemogne Teukam Guileine (C) practice some moves during a training session at a gym in Yaounde, on May 31, 2024. Taekwondo para-athletes Marie-Antoinette Ndassi and Chemogne Teukam Guileine will represent Cameroon following their qualification for the upcoming Paris 2024 Paralympic Games. (Photo by Daniel Beloumou Olomo/AFP Phoot)

A model presents a creation from The Blonds during New York Fashion Week Fall-Winter 2025 in New York City, U.S., February 8, 2025. (Photo by David Dee Delgado/Reuters)

A man protesting the Ferguson grand jury decision to not indict officer Darren Wilson in the Michael Brown case is arrested while marching through the streets on December 1, 2014 in New York City. Brown, an 18-year-old black man, was killed by Darren Wilson, a white Ferguson, MO police officer, on August 9. (Photo by Andrew Burton/Getty Images)

“Pantsir-S1 (NATO reporting name SA-22 Greyhound) is a combined short to medium range surface-to-air missile and anti-aircraft artillery weapon system produced by KBP of Tula, Russia. The system is a further development of SA-19/SA-N-11 and represents the latest air defence technology by using phased-array radars for both target acquisition and tracking”. – Wikipedia

Photo: Test of the surface-to-air missile Pantsir-S rocket and gun system in the conditions of the Polar region on the range “Pemba” near Vorkuta, approximately on October 20 2012. According to the statement of military, during doctrines five cruise missiles from five were destroyed. (Photo by Alexey Reznichenko)

Anissa Barbato from New York looks out over the city from the Edge, the highest outdoor sky deck in the Western Hemisphere on September 2, 2020 as it reopened to the public in New York. Rising 1,131 feet in the air from the heart of Hudson Yards it offers 360-degree views of New York Citys iconic skyline from the 100th floor outdoor viewing. (Photo by Timothy A. Clary/AFP Photo)

A vendor holds a teddy bear for sale on Valentine's Day in Port-au-Prince, Haiti, Monday, February 14, 2022. (Photo by Joseph Odelyn/AP Photo)

Women walk towards a polling station to cast their ballot during the first phase of voting for the India's general elections in Parbatsar in Rajasthan, on April 19, 2024. (Photo by Himanshu Sharma/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.