There is no island known as "Reils". It is possible that you are thinking of a different name, or the name has been misspelled.

Could you please provide more context or a possible spelling variation?

For example, are you thinking of:

* Reunion Island: This is a volcanic island in the Indian Ocean.

* Riel Island: This is a small island in the North Atlantic Ocean, part of Canada.

* A fictional island: Perhaps you read about an island called "Reils" in a book or watched it in a movie.

Once you provide more information, I can help you find the island you are looking for.