Wikipedia says:
Clare Island (Oileán Chliara in Irish) is a mountainous island guarding the entrance to Clew Bay in County Mayo, Ireland. It is famous as the home of the pirate queen, Grace O'Malley. Approximately 125 people live there today.
Geographical stats:
Area (approx): 16 km² (10 mi²)
Highest point: 462 metres (1515 ft)
Latitude/Longitude: (...) more....
by 
