Quartz Mountain (also called Baldy Point) is located in Greer County in southwest Oklahoma. It is the namesake of Quartz Mountain Nature Park and its eastern flank is enclosed by the park boundaries. It is near the cities of Mangum, Oklahoma and Altus, Oklahoma. The park is open to the public year round for rock climbing, hiking, boating, camping, nature observation and photography, and environmental education and interpretation. The mountain overlooks scenic Lake Altus-Lugert.