BY W. C4. WOOLNOUGH. 467 



At the village of Namasuleli or Wainiwaqa, on the Waidina, 

 the agglomerate hills, forming cliffs hundreds of feet high, come 

 close down to the northern bank of the river. The huge boulders 

 can be plainly seen in the face of such a cliff at great distances. 



From Namasuleli the agglomerate hills skirt the north bank of 

 the river more or less closely for about five miles. At this point 

 the river issues over extensive rapids through a magnificent 

 gorge about half a mile wide bounded by cliffs estimated to be 

 600 feet high. 



The river gravels consist, in addition to andesite, of large but 

 well rounded boulders of quartz diorite and hornblendic granite. 



Following the river up from the point where it issues from the 

 mountains to its source, the country is extremely rugged, and 

 consists of massive agglomerate hills with dykes and flows of solid 

 andesite, and extensive coarse and fine tuffs. 



Immediately after passing the gorge the mountain Devo forms 

 a most remarkable object (Plate xxiii., fig. 4). It is really an enor- 

 mous dyke which has been left standing as a wall, 200 to 300 

 feet (estimated) in height, through the denudation of the surround- 

 ing tuffs. From the gorge it is seen end on. Its summit must 

 be considerably over 1000 feet high (above the river level). Its 

 trend is about N.W. and S.E. 



For some distance above Nasirotou the valle}' is considerably 

 more open than it was lower down. After passing the above 

 town the track leads across a spur, 485 feet (aneroid) high, built 

 up of decomposed andesite tuff. From the western side of 

 this a magnificent view is obtained of the great mountain of 

 Korobasabasaga."^ The mountain, whose highest. summit reaches 

 3960 feet,t has five well-marked peaks whose shape even from 

 a distance is highly suggestive of a line of denuded volcanic 

 necks. 



* This name may be translated as " The Mountain with Ragged Peaks." 

 The term is very appropriate. 



t Admiralty chart. 



