-1500 



-1000 



1000 - 



r 



-500 - 



- :,no 



- 1000 



-500 



-1000 - 



- -1000 



-1500 



-1000 



Figure 5. Map of southwestern caldera showing major sidescan 



backscatter targets and the locations of vent areas. Scale 

 is in meters (transponder coordinates). 



69 



