1178 GEOLOGY AND PHYSICAL GEOGRAPHY OF THE STATE OF PERAK, 



group. This pass is about 400 feet above the level of the sea, 

 and therefore too elevated to permit of any river outlet. 



Mount Pondok. 



In Gapis Pass, or rather at the eastern end of it, there is an 

 isolated hill of highly crystalline limestone. It is an outlier of 

 the great paleozoic limestone formation already referred to. 

 Mount Pondok is about 4000 feet high and quite precipitous. 

 Its junction with the granite or paleozoic clays is not visible. Its 

 bright blue and red precipices, crowned by dark green jungle, 

 makes it a singular and beautiful object, though there are many 

 similar to it, in the State of Perak and elsewhere in the Peninsula. 



Mount Ijau. 



North of Gapis another group of ranges succeeds, culminating 

 in Mount Ijau. This cluster of ridges appears to be nearly of the 

 same dimensions as the Mount Bubu group, but not so high by 

 1000 feet or so. I estimate that each group is from 20 to 25 

 miles long and 14 to 16 miles broad, covering an area of about 

 400 square miles. This, however, is only a rough estimate formed 

 from views obtained from the summits of Group Bubu. I have 

 not been able to examine closely the termination of Mount Ijau 

 group to the north. From the sea and from the Perak River one 

 can perceive a distinct pass like that of Gapis. It is probably 

 about the same height and does not form the outlet of any river 

 from the eastern side of the range. 



Kurau Group. 



North of Gunong Ijau is another group which I don't know 

 how to distinguish, except that it forms the watershed of the 

 Kurau River. Its highest point is said to be a mountain also 

 called Ijau. If it be the peak which seems the highest point in 

 the range, it does not appear from a distance to be so high as 

 Mount Ijau to the south. 



