Booth Island

Turquet Point marks the north extremity of the island, at the tip of the long narrow peninsula sometimes called the Mount Lacroix peninsula for the large mountain that surmounts it.[4][10] To the west along the coast is Brouardel Point, a headland north of Port Charcot.[10]

Port Charcot indents the northwest shore of Booth Island for 1.5 nautical miles (3 kilometres) at its widest. Charcot established the French expedition's winter base at Port Charcot in 1904.[11] A cairn at Port Charcot, with a wooden pillar and a plaque inscribed with the names of the members of the French expedition, has been designated a Historic Site or Monument (HSM 28), following a proposal by Argentina to the Antarctic Treaty Consultative Meeting.[12]

Along the southern shore of Port Charcot, Vanssay Point marks the extremity of a small peninsula which extends north into the water of the port.[13] To the west, Français Cove, named for one of Charcot's ships, indents the south shore of Port Charcot.[14] A small island, Sögen Island, forms the east side of Francais Cove.[15]

Paumelle Point marks the south side of the entrance to Libois Bay and the northwest end of the peninsula that forms the west extremity of the island.[16] The end of the rocky western peninsula is indented by a small cove called Roland Bay, whose south end is marked by Hervéou Point, the western extremity of the peninsula.[17][18] Salpêtrière Bay indents the south coast of the western peninsula for 1 nautical mile (1.9 km) between Hervéou Point, and Poste Point to the east.[19] Charcot named the bay for the Hôpital de la Salpêtrière, a Paris hospital where his father, neurologist Jean-Martin Charcot, founded a clinic.[20]

Roullin Point marks the island's southern tip.[5]

Panoramic view of Port Charcot

Mount Lacroix is a prominent mountain with red vertical cliffs and a rounded summit, 640 metres (2,100 ft) high, surmounting the island's northeast peninsula. It was named by Charcot after French mineralogist Alfred Lacroix.[21] Cléry Peak is a peak on the north side of Mount Lacroix.[22]

There are several high peaks on the north–south trending ridge of the island. Mount Guéguen is a sharp rocky peak, 365 metres (1,200 ft) high overlooking Port Charcot at the north end of the main body of the island.[23] About 0.25 nautical miles (0.5 km) to the south is Jeanne Hill, standing 195 m (640 ft) high and named for Charcot's sister.[24] About 0.25 nautical miles (0.5 km) to the south of that is Louise Peak, which stands 625 metres (2,050 ft) high.[24] Standing 1 nmi (2 km) south is Gourdon Peak.[25][26]

Approximately 0.5 nmi (1 km) south of Gourdon is the highest point of the island, Wandel Peak, which stands 980 metres (3,215 ft) high.[3][23] In 2003, Australian mountaineer Damien Gildea called it "one of the most challenging unclimbed objectives on the Antarctic Peninsula".[27] On 15 February 2006 the peak was reached by a group of Spanish alpinists, who still avoided the last 10–15 metres (32.8–49.2 ft) of the mushroomlike top.[28]