Final answer:
Harney Peak, now known as Black Elk Peak, is the highest point in South Dakota, not related to the Great Dividing Range or Mount Feathertop which are in Australia.
Step-by-step explanation:
The state's highest point known as Harney Peak is actually located in South Dakota. Harney Peak, which has since been renamed to Black Elk Peak, is part of the Black Hills of South Dakota. This peak stands as the highest point east of the Rocky Mountains and is a significant landmark. However, there seems to be a mix-up in the reference provided as the Great Dividing Range and Mount Feathertop are located in Australia, not related to the United States' geography where Harney Peak is situated.