Claim: Therasia is the smallest island in the volcanic island group of Santorini.
Evidence: Therasia , also known as Thirasía , is an island in the volcanic island group of Santorini in the Greek Cyclades.
It lies north-west of Nea Kameni , a small island formed in recent centuries by volcanic activity and thus marking the centre of the island group.
Therasia is the second largest island of the group , the largest by far being Thera.