Mosaic Canyon is located in Death Valley. It is a moderate hike that is listed as suitable for all ages. It has marbled walls which at some points are rather narrow. What one sees as they hike back is colorful slick rod and polished marble along with multi colored rock fragments that look like they are cemented together. Countless flash floods have rushed down through the canyon through eons of time to polish the the walls, creating true marble. If one hikes the whole canyon they would end up at a dry waterfall. We only walked the first quarter mile, having already hiked a fair amount that day.