What is the largest canyon in the world?

The Yarlung Tsangpo Grand Canyon in Tibet is the largest canyon in the world, both in length and depth. It stretches over 500 kilometres (310 miles) and reaches depths of up to 6,009 metres (19,716 feet), surpassing the Grand Canyon in the United States. The canyon follows the Yarlung Tsangpo River, which flows through the eastern Himalayas. Its extreme depth and unique environment make it a hotspot for biodiversity, including rare species like the snow leopard and red panda. The canyon is also significant for its challenging terrain and cultural importance in the region.