Home › The Bridge of Xerxes › Basaltic and Rocky Curiosities

Basaltic and Rocky Curiosities

Giant's Causeway-Stonehenge.

GIANTS CAUSEWAY, IN IRELAND. - The following account is taken from notes of a mineralogical excursion to the Giant's Causeway, by the Rev. Dr. Grierson, as published in the Annals of Philosophy. "I left (says the Doctor) Colerain on the morning of Sept. 17, in company with a gentleman of that place, whose obligingness, intelligence, hospitality, and kindness, afforded me a most agreeable specimen of the Irish character, and proceeded to Giant's Causeway. The day was charming; and it is not easy for me to express the gratification I felt, as we made our way through a fine and gently varied district, at the idea of having it in my power soon to contemplate in favourable circumstances one of the most stupendous and interesting natural phenomena, that are any where to be seen. From Coleraine to the Causeway is eight miles in a northerly direction, and I could observe no rock on our way, but the trap formation. On crossing the river Bush, at the village called Bushmills, the country begins gradually to rise, and we descry, about two miles before us, a ridge of considerable height, seeming to terminate quite abruptly on the other side. What we perceive is the land side of the precipice of the Giant's Causeway. It seems to have been a hill of basalt, with nearly perpendicular columnar concretions, cut in two, as it were, by a vertical section, and the half of the hill next the sea carried away. On getting in front of this precipice, which you do by a pass on the west side of it, a most stupendous scene presents itself. The precipice, extending for a mile or two along the shore, is in many places quite perpendicular, and often three hundred and fifty and four hundred feet high, consisting of pure columnar basalt, some of the columns fifty feet in perpendicular height, straight and smooth, as if polished with a chisel. In other parts the columns are smaller, inclined, or bent; and a less length of them strikes the eye. From the bottom of this precipice issues, with a gentle slope of about one foot in thirty towards the sca, an immense and surprising pavement, as it were, consisting of the upper ends of the fragments of vertical columns of basalt, that have been left when the seaward half of the basaltic hill was carried off. The ends of these columns are in general fifteen or twenty inches in diameter, some of