Tianzhu Peak, the crowning summit of Tianzhushan, stands at an elevation of 1,489.80 meters. It owes its name to its majestic silhouette, which resembles a "Celestial Pillar" propping up the heavens. The peak is composed of granite formed during the Early Cretaceous period, approximately 128 million years ago. This massive monolith is defined by an intricate network of vertical and diagonal joints. Over eons of exposure to the elements—wind, rain, scorching sun, and frost—the surface rock fractured and shed along these fissures. This relentless natural sculpting eventually birthed the Tianzhu Peak we see today: a towering, columnar monolith, standing upright and ruggedly precipitous against the sky.