《徐霞客游记·楚游日记十》
走出斜岩往北行，下了马蹄石。它的北面两侧岩石高峻，叠云耸翠，高峻的岩石以内乱峰又环拱回抱形成恫。
出斜岩北行，下马蹄石，其阴两旁巉石嵯峨，叠云耸翠，其内乱峰复环回成峒山洞。
Going north after leaving Xieyan, I walked under the horseshoe stone. On the north side, the rocks were high and rugged, stacked with clouds and emerald green. Within the high rocks, there were chaotic peaks surrounding and hugging, forming a ferocious shape.