《徐霞客游记·黔游日记六》
顺着石阶走，便见北面山坞中浓雾从坞中升起，弥漫到北峰，咫尺之间无法看见；而南面威山的北面，唯有行走之处依然晴朗，可山顶也渐渐被浓雾笼罩起来。
循之行，则北坞霾雾从坞中起，弥漫北峰，咫尺不可见；而南面威山之北，惟行处犹朗，而巅亦渐为所笼。
Walking along the stone steps, we saw thick fog from the mountain glen in the north rising to the north peak. We could not see it clearly from a short distance; and from the north of the north peak of Mt. Wei in the south, only the place we were walking was still clear. However, the hilltop was gradually covered with thick fog as well.