https://www.nationalgeographic.com/magazine/2020/07/see-what-the-summit-of-mount-everest-looks-like-in-360-degrees-feature/

Mountaineers, cavers, and scientists ventured into the inhospitable caves at the giant volcano’s peak to learn more about how this frozen environment is changing over time. https://www.nationalgeographic.com/premium/article/frozen-labyrinth-atop-mount-rainier-ice-caves-science-expedition