Graciosa Island is referred to as the White Island, the northernmost of the Central Group of islands in the Azores. The ovular Portuguese island has an area of 60.65 square kilometres (23.42 square miles), a length of 10 kilometres (6.2 miles) and a width of 7 kilometres (4.3 miles). It is a volcanic island, dominated by a 1.6-kilometre-wide (1.0-mile) central caldera (the Caldeira) located in the southeast.
Graciosa Island is situated in the northwest tectonic structure called the Terceira Rift, oriented southeast to northwest and coincident with the orientation of the archipelago. The presence of the Rift has deformed Graciosa into an elongated oval form 12.5 km long by 7.5 km wide. The coast is rough and rocky but generally low, except in the northwest along the Serra Branca (where the cliffs are 200 meters high). There are two shallow bays, situated in the southeast and southwest corresponding to fishing ports in Vila da Praia and Folga, respectively. Along the northeast coast there are several smaller coves near Santa Cruz da Graciosa that were used as ports but are now abandoned, and the older whale and commercial port in Barra, now used as a recreational zone.