Young women wearing facemasks and traditional costumes of Song dynasty and Tang dynasty are seated on a bench in a park next to the East Lake in Wuhan, in China’s central Hubei province on May 17, 2020. The Guardian picture desk has chosen on December 17, 2020, the AFP photojournalist Hector Retamal as “Agency Photographer of the Year 2020” for his coverage of the novel coronavirus Covid-19 pandemic in Wuhan, China. (Photo by Hector Retamal/AFP Photo)

Supporters of Lebanese President Michel Aoun hold up a giant Lebanese flag as he delivers a speech outside the presidential palace in Baabda, east of Beirut, Lebanon, Sunday, October 30, 2022. Aoun left Lebanon's presidential palace Sunday marking the end of his six-year term without a replacement, leaving the small nation in a political vacuum that is likely to worsen its historic economic meltdown. (Photo by Bilal Hussein/AP Photo)

An undated handout photo obtained on May 14, 2022, from Khartoum's Marshall Nature Reserve for exotic birds, shows a visitor posing for pictures with some of the protected birds in the capital Khartoum. Tucked away east of Sudan's capital Khartoum, a sanctuary of lush green vegetation has been a haven for dozens of exotic birds from far and wide. (Photo by Khartoum Marshall Nature Reserve/AFP Photo)

Runners use headtorches as they compete in Centurion South Downs Way 100 ultramarathon, at Firle Bostal near Lewes, south of London on June 9, 2024. The Centurion South Downs Way 100, is an ultramarathon, predominantly off road course, covering a distance of 100 miles (160,9 kilometres) and that takes the competitors along the South Downs Way from Winchester in Hampshire to Eastbourne in East Sussex. (Photo by Ben Stansall/AFP Photo)

Aerial view huge cliff rockfall at East Cliff at West Bay in Dorset, UK which happened overnight and has blocked the beach below on December 30, 2024. Golfers can be seen playing on the 15th green at Bridport & West Dorset Golf Club which is next to the latest landslip. The cliff has had frequent rockfalls in the past year which forced Dorset Council at the beginning of 2024 to close the South West Coast Path which runs along the top of the cliff due to safety concerns. (Photo by Graham Hunt/BNPS)

Tourists take shelter from the sudden heavy rain following the impact of Typhoon Danas on July 8, 2025 in Hangzhou, Zhejiang Province of China. East China's Zhejiang Province has elevated its typhoon emergency response to Level III at 10 a.m. on July 7 as Typhoon Danas, the fourth typhoon of this year, moves closer. (Photo by Lin Yunlong/Zhejiang Daily Press Group/VCG via Getty Images)

Waves triggered by Typhoon Hato are seen in Hong Kong, China on August 23, 2017. A powerful typhoon barreled into Hong Kong on Wednesday, forcing offices and schools to close and leaving flooded streets, shattered windows and hundreds of canceled flights in its wake. Typhoon Hato came within 60 kilometers (37 miles) of Hong Kong, close enough to be considered a direct hit under Hong Kong's storm warning system. It was headed toward the western side of mainland China's Pearl River Delta. (Photo by Tyrone Siu/Reuters)

The Grand Canyon Skywalk is a transparent horseshoe-shaped cantilever bridge and tourist attraction in Arizona near the Colorado River on the edge of a side canyon in the Grand Canyon West area of the main canyon. USGS topographic maps show the elevation at the Skywalk's location as 4,770 ft (1,450 m) and the elevation of the Colorado River in the base of the canyon as 1,160 ft (350 m), and they show that the height of the precisely vertical drop directly under the skywalk is between 500 ft (150 m) and 800 ft (240 m).