Cabo San Pío (English: Cape San Pio) at (55°3′S66°31′W), the southernmost tip of mainland Isla Grande de Tierra del Fuego as well as of Argentina, except for the small islet Islote Blanco (55°3′48″S66°33′12″W), that lies about 1.5 km (1 mi) off the coast in SW direction (about 0.5 km further to the south).