-O FOOTE: GEOLOGY OF THE BELLARY DISTRICT. 



dodi hill is perhaps an exception on account of the very fine rocky 

 bluff at its southern end. 



The Kamana Konda group, north of the Adoni group, offers a charac- 

 teristic difference in appearance from the latter* 



Kamana Konda hill. •»,,,.« r ■> 



Blocky hills are one of the most striking features 



of this group instead of being of rare occurrence. Some of them, such 



as Kosgi hill, are among the most striking in any of the granitic districts 



of the peninsula. Kamana Konda shows a good number of fine tors, and 



to this group belongs also what I regard as the 

 The " Sisters " tor. ■ , .>,,,,. , „ ,, 



finest tor known in South India — a rock called by 



the natives the " Akka chellulu " — the " Sisters " — a pair of tall thin 

 blocks perched on the top of a huge tower-like mass : the height of 

 the whole I estimate at about 80 feet. From certain points the rift 

 between the two uppermost blocks opens sufficiently for day-light 

 to be seen between them. The " Sisters " are situated a short dis- 

 tance west of the railway, about 3 miles south of Kosgi station. 



Kosgi hill, already referred to as a fine specimen of the blocky- 



surfaced hill, is between 400 and 500' high, and its 

 Kosgi hill screes. . . 



whole surface thickly covered with large weather- 

 rounded blocks in utter confusion, as if they had not only fallen out of 

 situ through weather action, but as if they had afterwards been further 

 well shaken together and out of all possible relation with the former joint 

 systems which had allowed of the weather acting upon them. Such 

 shaking was undoubtedly done by severe earthquakes, though even 

 slight ones must from time to time shake down large blocks and 

 tors, which have come to be weathered into states of precarious 

 equilibrium. I have elsewhere called such confused blocky surfaces 

 "Earthquake Screes ", for screes they undoubtedly are, and nothing 

 else, though on a gigantic scale, and so they had better be called for 

 the future " Giant Earthquake Screes ". See page 43. 



The Kotikal group of hills must now engage our attention : 

 they are too well-marked and important a group to have been treat- 

 ed only as an extension south-eastward of the Kamana Konda 

 group, though from their geographical position that might have been 



( 7° ) 



