Calico Peaks  The Calico Peaks are geologically and historically colorful mountains in the Calico Mountains Range in the Mojave Desert of San Bernardino County and Inyo County, California. They are located just north of Barstow, Yermo, and Interstate 15. Calico Peak is in elevation in the San Bernardino County portion. The Rainbow Basin geologic feature, in the Bureau of Land Management-managed Rainbow Basin Natural Area, and Calico Ghost Town are located below the Calico Peaks in the Yermo Hills. The Calico Early Man Site, a prehistoric Native American archaeological site, is in the mountains also.