《徐霞客游记·粤西游日记三十五》
于是截流横渡，又南行二里，望见西边有村庄在山坞中，这是八洞村。又向南一里，再向南渡溪。
是为八洞村。都田村之东有八仙洞，乃往龙门道。又南一里，复南渡溪。
After crossing the stream, walk another two miles south, and a village will come into view in the valley among the mountains. This is Badong village. Continue south for another mile before crossing the stream again.