The basaltic columns of the Giants' Causeway and the Isle of staffa are well-known examples of such regularly jointed masses.
"Geology"
James Geikie
The general effect is rather like the famous cavern at staffa.
"Cornwall"
G. E. Mitton
The next place of interest before which we brought-up was the island of staffa.
"A Yacht Voyage Round England"
W.H.G. Kingston