Sorpresa Rock (67°51′S 69°34′W) is an exposed rock lying southwest of Cavalier Rock, off the south end of Adelaide Island. The name appears on a Chilean government chart of 1947. Sorpresa is a Spanish word meaning surprise.
This article incorporates public domain material from the United States Geological Survey document "Sorpresa Rock" (content from the Geographic Names Information System).
References
Sorpresa Rock Wikipedia(Text) CC BY-SA