Scars at Kilauea — WENTWORTH 
367 
Fig. 5. Pattern of area where the scars are thickest, sketched by rope survey. The large black spots are by actual 
survey of size and position; smaller pattern of rings is by survey but dots are symbolic. 
root in the finer soil of the center portion, 
or in the shelter of the block which remains. 
Other vegetation also is somewhat adapted 
to the ring pattern. 
It can reasonably be supposed that this 
outer series of scars was formed in the 1790 
eruption. If they had been formed earlier they 
would likely have been destroyed by the ash 
flung out by that eruption. However, there is 
no contemporary record and we are left with 
this very general evidence and presumption. 
That eruption was very violent and threw out 
much accidental material. 
The rims are by no means covered by coarse 
blocks, and at midday the whole pattern is 
fairly faint, though discernible by a person 
who looks for it. At sunrise and in late after- 
noon the rings are most conspicuous from 
their relative relief. In the central part of their 
distribution the rings occur perhaps in every 
20-foot square of the ground; around the 
margin of the area they are scarcer, perhaps 
two or three in an acre. 
