22 ANCTENTMONUMENTS. 



of the wall curve inwardly as they approach each other, upon a radius of seventy-five 

 feet, forming a true circle, interrupted only by the gateways. Within the space 

 thus formed, is a small circle one hundred feet in diameter; outside of which and 

 covering the gateway is a mound, e, forty feet in diameter and five feet high. 

 The passage between the mound and the embankment, and between the walls of 

 the circles, is now about six feet wide. The gateway or opening d is twenty feet 

 wide. This singular entrance, it will be remarked, strongly resembles the gate- 

 ways belonging to a work already described {Plate VI.), although much more 

 regular in its construction. 



The ditches, / f, which accompany the wall on the south, subside into the 

 ravines upon either side. These ravines are not far from sixty feet deep, and have 

 precipitous sides, rendering ascent almost impossible. The mound h is three feet 

 liigh. 



The area of the work is seventeen acres ; the whole of which is ygt covered with 

 a dense primitive forest. The valley beyond the river is broad, and in it are many 

 traces of a remote population, of which this work was probably the fortress or 

 place of last resort, during turbulent periods. 



PLATE VIII. No. 2. • 



This work is situated six miles south-west of the town of Hamilton, in Butler 

 county, Ohio. It has no very remarkable features, although possessing the general 

 characteristics of this class of works. It consists of a simple embankment of earth 

 carried around the brow of a high, detached hill, overlooking a wide and beautiful 

 section of the iMiami valley. The side of the hill on the north, towards the river, 

 is very abrupt, and rises to the height of one hundred and twenty feet above the 

 valley. The remaining sides are steep, though comparatively easy of ascent. 

 The walls are scarcely four feet high, and seem to have been much reduced by 

 time. There are six gateways, two of which open upon natural bastions or look- 

 outs, and the remaining four towards copious springs, as shown in the plan. The 

 ground within the walls rises gradually to the centre, from which an extended view 

 of the valley and surrounding country may be obtained. There are two mounds 

 of earth placed near together on the highest point within the enclosure, meas- 

 uring respectively ten feet in height. 



South-east of the work, and nine hundred feet distant, is an eminence A, about 

 fifty feet higher than the one occupied by the above mentioned work, — being much 

 the highest point in the neighborhood. The area on the top is, however, incon- 

 siderable. There are some traces of ancient occupation here, though they are far 

 from being distinct or considerable. 



