Besides the single bason above-mention'd, I could not perceive one in all the rocks; but in a Karn below, overlooking, and it's sides almost perpendicular to the sea, I saw many furrows and clefts crossing the surface of the upper rocks; this lower-most Karn is call'd in the Cornish tongue Karn-a-wethen, that is, the Tree-Karn […]
Source: wiktionary