This stupendous basaltic grotto in the lonely Isle of Staffa remained, singularly enough, unknown to the outer world until visited by Sir Joseph Banks in 1772. As the visitors' boat glides under its vast portal, the mighty octagonal columns of lava, which form the sides of the cavern—the depth and strength of the tide which rolls its deep and heavy swell into the extremity of the vault unseen amid its vague uncertainty—the variety of tints formed by the white, crimson, and yellow stalactites which occupy the base of the broken pillars that form the roof, and intersect them with a rich and variegated chasing—the corresponding variety of tint below water, where the ocean rolls over a dark red or violet-colored rock, from which the basaltic columns rise—the tremendous noise of the swelling tide mingling with the deep-toned echoes of the vault that stretches far into the bowels of the isle—form a combination of effects without a parallel in the world!
Sir Walter Scott's lines express the sentiment most proper to the place:
"The shores of Mull on the eastward lay,
And Ulva dark, and Colonsay,
And all the group of islets gay
That guard famed Staffa round.
Then all unknown its columns rose,
Where dark and undisturbed repose
The cormorant had found,
And the shy seal had quiet home,