A Sadhu or a Hindu holy man sits on the banks before taking a holy dip at Sangam, the confluence of the Ganges and Yamuna rivers with the mythical, invisible Saraswati river, during the “Maha Kumbh Mela”, or the Great Pitcher Festival, in Prayagraj, India, on January 13, 2025. (Photo by Adnan Abidi/Reuters)

Participants jump into the water during the 114th edition of the Copa Nadal (Christmas Cup) swimming race in Barcelona's Port Vell on December 25, 2023. The traditional 200-meter Christmas swimming race gathered around 300 participants on Barcelona's Port Vell (old harbour). (Photo by Josep Lago/AFP Photo)

Indian folk artists perform during the “Unboxing Bengaluru Habba” or Bangalore festival, an annual citywide festival held in front of Vidhana Soudha, the State Legislature of Karnataka, in Bangalore, India on December 10, 2023. The Bengaluru festival showcases folk dance and cultural diversity that have shaped Bengaluru into a vibrant metropolis. (Photo by Jagadeesh N.V./EPA/EFE)

If you’re afraid of heights, caves, the dark, suffer from claustrophobia or vertigo, this might not be for you, but if not, a small Welsh town has the perfect subterranean adventure for you: the world’s largest underground trampoline. Just unveiled in Blaenau Ffestiniog, North Wales, Bounce Below is a network of trampolines and slides mounted to the walls of an abandoned slate mine at heights of 20 feet to 180 feet off the ground. Visitors are welcome to climb, bounce, slide, and jump in the netting amidst a technicolor light show.

The painted nails of a Kurdish Peshmerga female fighter are seen as she takes up a position during combat skills training before being deployed to fight Islamic State militants, at their military camp in Sulaimaniya, northern Iraq September 18, 2014. (Photo by Ahmed Jadallah/Reuters)

Ingots of 99.99 percent pure silver are cast at the Krastsvetmet Krasnoyarsk non-ferrous metals plant in the Siberian city of Krasnoyarsk, Russia, June 5, 2015. Krastsvetmet is one of the world's largest players in the precious metals industry. REUTERS/Ilya Naymushin

A competitor wearing a kilt and standing on a barrel throws a bowling ball between her legs during the “Brigaball” contest at the annual Bundanoon Highland Gathering, showcasing traditional Scottish events, held in the town of Bundanoon, located southwest of Sydney, April 9, 2016. (Photo by David Gray/Reuters)