What are the four islands in 'the orkney islands'?

Question

What are the four islands in 'the orkney islands'?

Answer 1

http://maps.google.co.uk/maps?f=q&hl=en&...

Answer 2

Mainland is the largest island of Orkney

Sanday is the largest of the North Isles

Rousay is the 3rd largest island

Hoy is the second largest island

Altogether there are over 70 islands and skerries, but only 20 of these are inhabited

Hope this helps!!

Answer 3

There are more than four

http://en.wikipedia.org/wiki/Orkney