Oregon side, looking toward Idaho. Snake River at the bottom of the canyon. Rush Creek rapids (IIRC) are visible to the right. An underexposed slide from 30 years ago, but it may have some historical value ;) Hell's Canyon, formed by the Snake River, a major tributary of the Columbia, is claimed to be the deepest gorge in North America, deeper than the Grand Canyon. It marks the state line between Oregon (to the west) and Idaho (to the east). In 2003 we took a commercial river trip down the Snake and were able to look back up at this point--no pic, alas!