较高的一级海拔5100m左右，分布在山脉的顶部，称山顶面；
The higher planation surface about 5100m in height is only preserved on the crest of the mountains , so called the summit surface ;
沿着附近的一条林间小径小爬了一会儿，我们来到了山顶，面西耸立着。
A brief climb along a nearby wooded trail brought us to a hilltop that faced west .
山顶面