《徐霞客游记·滇游日记三十二》
稍微平坦些，转向西南绕向北，半里，再曲折上登，越加陡峻得厉害。
稍夷平坦，转西南盘而北，半里，复曲折上，峻愈甚。
The road became slightly flatter, then turned southwest and circled north for half a mile, then zigzagged upwards, becoming even steeper.