Morgan's Island, a small islet in Blue-Mud Bay, on the north-west of Groote Eylandt, is composed of clink-stone; and other rocks of the trap-formation occur in several places on this coast.

Grave-diggers were at work on a near hillside; she could hear the clink clink of spade and pick; reveille was sounding from hill to hill; the muffled stirring became a dull, sustained clatter, never ceasing around her for one instant.