Cane Creek Mountains 300–350 million years ago during the formation and rifting of Pangaea. This earlier range is thought to have had peaks more than high, which would rival the Himalayas, the Andes, and the Alaska Range. However, erosion has worn this old mountain range down. The highest peaks of this old range are now found in the Appalachian Mountains on the eastern coast of North America and in the Anti-Atlas Mountains of Morocco in Africa. The heavily eroded hills of piedmont, including the Cane Creek Mountains, are remnants of the sizable mountain chain. The Cane Creek Mountains lie in the Carolina Slate
Hamgyong Mountains mountains on the peninsula. The tallest mountain in the range is Kwanmo Peak (2,540 m), the second-highest after Paektu (China's "Changbai"). Other notable peaks include Du Peak (2,396 m), Gwesang Peak (2,333 m) and Mount Dury (2,303 m). In total, ten major peaks and 62 subsidiary peaks of the mountains in this range are 2,000 m or higher. Hamgyong Mountains The Hamgyong Mountains (, , "Hamgyeong Sanmaek"), officially known as the Gangbaekjeonggan and formerly known as the or , is a North Korean mountain range. It lies in the northeast quarter of the country, extending for about southwest and northeast