The confluence of the Green
rivers, right at the center of Canyonlands National Park
, can be reached by a relatively popular 5.5 mile trail traversing fairly level terrain, starting at Big Springs Canyon Overlook, at the end of the road in the Needles
district of the park. The river canyons are nearly 1,000 feet deep at the confluence, and mostly sheer-walled towards the top, though there is an unmarked route down, perhaps the same one used by explorer John Wesley Powell in 1869, when he first sailed down the river, and hiked up to the rim near this point.
Confluence Overlook Trail - full description