南山顶破火山口位于连城县赖源乡与新罗区万安镇交界的廖天山，地貌上为正地形陡峻山峰，由火山喷发形成的集块岩、火山角砾岩、凝灰岩及火山弹在南山顶均可观察到。

Nanshanding Caldera is located in the Liaotianshan Mountain, which is in the junction of Laiyuan Town, Liancheng County and Wan'an Town, Xinluo District. It is characterized by positive landform with steep slopes. Agglomerates, volcanic breccias, tuffs and volcanic bombs formed by volcanic eruption can be observed at Nanshanding.