 The Heights were mapped by FIDS from 1948–59, and were later named for Swiss glaciologist Paul-Louis Mercanton.Farther east, just before Arrowsmith Peninsula joins the main coast, rocky Chertigrad Point marks the west side of the entrance to Blind Bay, the northeast extremity and head of Bourgeois Fjord.The point was named by the Bulgarian Antarctic Institute (BAI) after the western Bulgarian medieval fortress Chertigrad.