Trans. N.Z. Inst., Vol. LI II. 



Plate XXXI. 



Fig. 1. — The Baring Head platform on Baring Head, showing a flat-topped ancient 



outlying reef surmounted by stacks. 



Fig. 2. — Lake Koangatera, at the drowned mouth of Gollan's Valley, showing 

 strongly-cut sea-cliffs along the sides and bordering the bay-head delta 

 in the foreground. 



Face /). 140,] 



