A hot air balloon depicting a dog that participates in the International Hot Air Balloon Festival, flies over Leon, Guanajuato state, Mexico, on November 14, 2020, amid the COVID-19 coronavirus pandemic. The festival, in which 100 air balloons participate, was held without spectators to avoid crowds and prevent contagion. (Photo by Ulises Ruiz/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.

American actress, singer and model Zoe Kravitz is spotted out and about with a friend in New York City on October 6, 2020. The 31 year old “Batman” star carried a large tote bag and wore a blue tank top, black trousers, and matching flats. (Photo by TheImageDirect.com)

A demonstrator plays the role of person hanging herself during a protest over the Thai government's handling of the coronavirus pandemic and to demand Prime Minister Prayuth Chan-ocha's resignation, in Bangkok, Thailand, September 6, 2021. (Photo by Soe Zeya Tun/Reuters)

A climate campaigner in Dublin on November 9, 2024 dresses as Lady Justice to demand that world leaders commit to a fast, fair and funded phase-out of all fossil fuels when they gather in Azerbaijan on Monday for the Cop29 climate conference. (Photo by Stedman Photography)

Rohingya refugee sisters Nur Kaida (R) and Ruhana hug each other at their shelter at the Palongkhali refugee camp near Cox's Bazar, Bangladesh December 21, 2017. (Photo by Marko Djurica/Reuters)

Kinga Drozdz of Team Poland reacts against Xufeng Zou of Team China during the Women's Sabre Category A quarterfinals on day six of the Paris 2024 Summer Paralympic Games at Grand Palais on September 03, 2024 in Paris, France. (Photo by Steph Chambers/Getty Images)

A man stands in front of a poster created by artist Tomoko Konoike, one of 20 posters officially selected for the Tokyo Olympics and Paralympics, at the Museum of Contemporary Art Tokyo Monday, January 6, 2020. The official posters are out for this year's Tokyo Olympics and Paralympics. The 20 posters have been created by 19 artists in fields ranging from painting, graphic design, and photography. Calligraphy and Japanese manga are also represented. (Photo by Jae C. Hong/AP Photo)