20. Yarlung Tsangpo Grand Canyon, China

The Yarlung Tsangpo is the deepest canyon in the world. It’s well-known for its geological history, biodiversity, and dangerous waters. The Yarlung Tsangpo River is nicknamed the Everest of Rivers due to its challenging conditions. Much of this canyon is still inaccessible because of the tough terrain, slippery slopes, and often unpredictable weather.

21. Fjaðrárgljúfur Canyon, Iceland

This natural beauty was created during the last Ice Age as the running glacial meltwater carved through the rock. It’s sometimes closed due to a high amount of visitors. The best time to visit is during the summer or early fall. That way you avoid having to deal with icy, slippery paths due to the winter ice and snow.