Staffa and Fingal’s cave, Inner Hebrides, Scotland. Photos taken last week, when we had the chance to spend a few hours on the island.
Staffa is an entirely volcanic island, probably best known for its
unique geological features such as the many caves and the unique shape
of the basalt columns which are also found in the Giant’s Causeway and
Rathlin island in Northern Ireland and, closer by, on the island of Ulva.
It consists of a basement of tuff, underneath colonnades of a black
fine-grained Tertiary basalt, overlying which is a third layer of
basaltic lava lacking a crystalline structure. By contrast, slow cooling
of the second layer of basalt resulted in an extraordinary pattern of
predominantly hexagonal columns which form the faces and walls of the