iaa FOOTE : GEOLOGY OF THE BELLARY DISTRICT. 



of the Nandihalli valley (the south-westerly fork of the main valley), 

 but which narrows greatly to the south-east in part, apparently, from 

 actual thinning out, but in part also from the strata of all kinds being 

 there tilted up at much higher angles than further north. 



Underlying this great trap formation, the " Sandur trap " of the 

 Narihalla section, and forming the south-western side of the Nandihalli 

 valley, which, along the northern edge of this part of the Kumdra- 

 swami plateau, rises very steeply, and is in places distinctly scarped, 

 comes the great series of haematite quartzites we became acquainted 

 with in their north-western extensions in the Raman Drug division. 

 They do not at all diminish in size as they sweep round south-east- 

 ward, from the great Ubbalagundi gorge, and are very conspicuous ob- 

 jects till they get past the Kumaraswami Trigonometrical station hill, 1 

 when they trend south-eastward and sink down rapidly into the level 

 southern half of the plateau, and are speedily lost under a superficial 

 pseudo-lateritic formation, Whether their disappearance is caused by 

 a change in the mineral character of the beds cannot be ascertained. 

 The Trigonometrical station hill is the highest point in the Sandur hill 

 group, and according to General Cullen, as quoted by the Schlagint- 

 weits, measures 3,400 feet above sea level. 



The most interesting, and by far the most picturesque, view of the 

 View of the Sandur Sandur valley is one to be got from the edge 

 valle y- of the plateau between the Kammataravu iron 



ridge and the eastern end of the Trigonometrical station ridge. 

 One of the beds here forms a precipitous scarp of very lateri- 

 toid rock some 30 feet high, that enables one to get a clear 

 view over the thick jungle which here covers the slopes. The eye 

 ranges from here up the valley for some 12 or 15 miles, and can make 

 out a large number of points in the collocation of the beds which form 

 the Devadara ridge, the western side of the synclinal and the inter- 

 vening traps and schists of the Sandur valley. The view is one that 



1 The Kumaraswami Trigonometrical station hill is given in sheet 59 as " Mulla 

 Ammanhuroo." A name which is evidently a corruption of Malla Amman taravu, the 

 name of a small temple and tank lying a little to the south-west of the hill. 



The peak does not appear to have any distinctive local name, probably because 

 not at all a striking object in the landscape. 



( 122 ) 



