Performs a variety of sales and customer support services for products including stamps, stamped paper, postal cards, philatelic products, and special promotional items; with or without direct supervision.
Siskiyou Pass. Siskiyou Pass, including the 4,310-foot-high Siskiyou Summit of I-5 that is located a short distance east of the original historic pass, is the highest and most historically significant mountain crossing on the main transportation route that links California and Oregon.
The highest peak in the contiguous U.S. is Mount Whitney at 14,505 feet, located within the Sierra Nevada in California. California mountain regions were formed millions of years ago during major geologic movements, though the earth continues to move even inches per day in some parts of California as new mountains slowly form.