Rathlin Island, Co. Antrim

Mathematical Gazetteer of the British Isles

This is 7 miles off the north coast of Antrim.

In 1898 Marconi sent his assistant George Kemp to set up one of the earliest radio transmitters to communicate with Ballycastle on the mainland (about 8 miles). They transferred information about ships passing the Rathlin lighthouse for onward transmission to Lloyds of London.

[1] says there is a columnar basalt formation at the SE end, near Doon Point. Cf entry for Giant's Causeway.

References (show)

  1. Hammond, Reginald J. W., ed. The Complete Ireland A survey of the principal resorts and places of interest. p.267

The Mathematical Gazetteer of the British Isles was created by David Singmaster.
The original site is at THIS LINK.