From thence to the bottom of Exmouth Gulf, more than one hundred and fifty miles, the coast is low and sandy, and does not exhibit any prominences.

The west coast of Exmouth Gulf itself is formed by a promontory of level land, terminating in the North-west Cape; and from thence to the south-west, as far as Cape Cuvier, the general height of the coast is from four to five hundred feet; nor are any mountains visible over the coast range.
Several portions of the shore between Shark's Bay and Cape Naturaliste have been described in the account of Commodore Baudin's Expedition; but some parts still remain to be surveyed.

From the specimens collected by Captain King and the French descriptions, it appears that the islands on the west of Shark's Bay abound in a concretional calcareous rock of very recent formation, similar to what is found on the shore in several other parts of New Holland, especially in the neighbourhood of King George's Sound; and which is abundant also on the coast of the West Indian Islands, and of the Mediterranean.

Captain King's specimens of this production are from Dirk Hartog's and Rottnest Islands; and M.Peron states that the upper parts of Bernier and Dorre Islands are composed of a rock of the same nature.

This part of the coast is covered in various places with extensive dunes of sand; but the nature of the base, on which both these and the calcareous formation repose, has not been ascertained.
The general direction of the rocky shore, from North-west Cape to Dirk Hartog's Island, is from the east of north to the west of south.