They are all constantly tempting climbers to test their endurance and potential. One of these sirens is Alaska's Mt. McKinley, known also as Denali, which at 6194 meters is the tallest peak in North America.
玉山、阿爾卑斯山、喜馬拉雅山、聖母峰，永遠都對登山者招手，試探他們的毅力與潛能。