MailOnline Travel has dug deep, leaving no sandstone slab or volcanic rock unturned, in a quest to unearth breathtaking pictures of the world's most jaw-dropping canyons - geology that will leave you gobsmacked. We also present canyons in Brazil and Hawaii that are truly Lost World material - and one in Arizona that's decidedly off-world material. And this image shows the largest version in the world - Blyde River Canyon, in Mpumalanga, eastern South Africa. It is 26km (16 miles) long and 800 metres (2,625ft) deep in places. The canyon is known for its mesmerising rock formations, beautiful waterfalls and ancient 'Echo Caves' stretching 24 miles (40km) into the earth.

Source: Daily Mail May 31, 2021 09:33 UTC