《徐霞客游记·游雁宕山日记后》
在巨石上面坐了很久，又往下沿着石缝往里走，崖壁上层层裂开的石缝，都可以摸索着走通。
又循崖东跻里许，出石璺之上，丛木密荫，不能悬裂，皆可扪而通也。
I sat on the giant stone for a long time, and then I went down along the stone crevice. The layers of stone on the cliff were cracked, and I could explore to reach them.