Geology- The main rock found throughout the canyon is large, Precambrian-core rock dating back to millions, even billions of years ago. History- some of the ranching families still live in Unaweep and are called legacy families. Plantlife- The Brown-Spined Prickly Pear look like cactus with red, yellow, or pink flowers on them. Watershed- Cutthroat, rainbow, Cut bow, and brown Trout fish are all found in the Colorado river watershed. Wildlife- Bald eagles are big birds with white heads and The females are all larger than the males.