《徐霞客游记·黔游日记六》
一里，到了山的左侧，就见威山的山脉自北突向南，南面高耸而北面低伏，南面陡削而北面下垂，东西都横亘着山崖，斜向高举往南上升；从南边山麓又突起一座小峰，也像这样。
一里，抵山左腋，则威山之脉，自北突而南，南耸而北伏，南削而北垂，东西皆亘崖斜骞而南上；从南麓复起一小峰，亦如之。
After a li, we reached the left side of the mountain, and saw the mountain range of Mt. Wei from north protruding to the south. The south side was high but the north side was low. The south side was steep but the north side was down-hanging. Stone cliffs horizontally spanned in the east and the west, and sloped and elevated from north to south; on the mountain foot in the south, another small peak suddenly raised, and it also was like this.