《徐霞客游记·楚游日记十》
三分石今天不能到达，其余两岩先生应先游览，回来后用日落前的剩余时间再进这洞，点着烛火游览，这样就算深夜也无妨碍。 
三分石不可到，二岩君当先了之，还以余晷剩余时间入洞，为秉烛游，不妨深夜也。 
It will not be possible to get to the Three-Part Stone today, as you should rather first visit the other two rocks, and after returning here go into the cave with the remaining time before sunset. It does not matter if it is already dark outside, as you can explore the cave by the light of candles.