《徐霞客游记·粤西游日记三十二》
由这里下山三次上山三次，多次渡过小溪，都是从东南流向西北的，这才明白山脉延伸而过的山脊还在东面，这些都是它回绕转折过的土阜，水流往西北流注的，就是在西边转向东南流入木桥下大溪的水流了。
由是三下三上，屡渡小水，皆自东南注西北，始知其过脊尚在东，此皆其回环转折之阜，流自西北注者，即西转而东南下木梁大溪者也。
Came down from here, went up three times, and came down three times. Crossed many small streams, which all flowed from southeast to northwest; then realized that the ridge along which the mountain range extended was still to the east. These were all earth mounds it had circled and turned around, and the water which flowed northwest was the water that turned and flowed southeast into the large stream under Wooden Bridge toward the west.