《徐霞客游记·楚游日记十》
洞也转往南，更加宏大高敞，游人通常到此便止步，因为水深难以渡过去。
洞亦转而南，愈宏崇，游者至此辄止，以水深难渡也。
The cave also turns south, becoming larger and taller. Tourists usually stop here because the water is deep and difficult to cross.