Consisting of a thin strip of land and hundreds of small, idyllic islands, Comarca Guna Yala, or San Blas as it's more commonly known, (see map) stretches along Panama's Atlantic coast, covering an area of approximately 100 sq miles (259 sq km).
The Comarca borders Colombia to the east; Darien province to the east/southeast; Panama province to the south; Colon province to the west; and Caribbean Sea to the north.
Google Map - Guna Yala (San Blas)
