Question: John Still was a British archaeologist known for his discoveries at an ancient rock fortress located in what country?
Sentence (from "Sigiriya"): Sigiriya or Sinhagiri ("Lion Rock" Sinhalese: සීගිරිය , Tamil: சிகிரியா , pronounced see-gi-ri-yə) is an ancient rock fortress located in the northern Matale District near the town of Dambulla in the Central Province, Sri Lanka.
Relevant evidence: Yes