The Ishi Wilderness in the Shasta Cascade foothills of northern California, is approximately twenty miles east of Red Bluff, California, USA. The Ishi Wilderness is a unique 41,339-acre, low-elevation wilderness created when the US Congress passed the California Wilderness Act of 1984. The land is etched by wind and water, and dotted with basalt outcroppings, caves, and unusual pillar lava formation. The land is a series of east-west running ridge framed by rugged river canyons, with the highest ridges attaining elevations of 4,000 feet. Deer Creek and Mill Creek are the principle drainages and flow into the Sacramento River.
The Ishi Wilderness is the only protected area in California that preserves a significant portion of the Sierra/Cascade foothill region of the southernmost Cascade Range.
Ishi is the name given by anthropologist Alfred L. Kroeber to the last existing indian from the Yahi Yana tribe. The Yahi Yana tribe had lived in the area for over three thousand years. Sometim (from [www.wikipedia.org](http://www.wikipedia.org/wiki/Ishi_Wilderness).