 The St Kilda World Heritage Site covers a total area of 24 @,@ 201 @.@ 4 hectares ( 59 @,@ 803 acres ) including the land and sea contained within a square with the coordinates 57 ° 54 ' 36 " N / 08 ° 42'W , 57 ° 46'N / 08 ° 42'W , 57 ° 46'N / 08 ° 25 ' 42 " W , 57 ° 54 ' 36 " N / 08 ° 25 ' 42'W . The land area is 854 @.@ 6 hectares ( 2 @,@ 112 acres ) . 
