The Philippine Journal of Science 



from the high point immediately back of the ] 



(text fig. 2). The eastern escarpment is very imposing (Plate 4, fig. 1). 

 It is at least 1,500 feet (450 meters) in height, with an average slope of 

 about 60°. Over the side of this eastern wall plunge several considerable 

 streams of water in wonderful cascades. One of these takes a* total drop 



