The Chasm is a dramatic gorge on the Cleddau River in Fiordland National Park, located near the Homer Tunnel along the Milford Road.

Here, the river is forced through a narrow rocky valley as it descends from the Darran Mountains, generating thunderous waterfalls and extraordinary water-sculpted rock formations.

Over thousands of years, swirling currents carrying small rocks and gravel have scoured the bedrock into smooth basins and intricate swirling patterns.

A short return walk through native forest leads to the river's edge, where the sheer velocity of the water offers a vivid sense of the immense rainfall the Milford Sound region receives.

Note that part of the track is currently closed, preventing access to the full viewpoint over the waterfalls and rock formations, though visitors can still reach the river's edge.

Check the Department of Conservation website for current track conditions before visiting.