a) Upper Tanana Ri ver-Upstream Pit, note extensive shallow 

 areas. 



w 



b) Upper Tanana R i ver-Upstream Pit 

 p i ke dens i t y . 



- area of high northern 



Figure 57. Tanana R i ver-Upstream upper pit showing extensive 

 vegetation beds, 18 August 1978. Note difference in the 

 extent of vegetative development in this 15-year old pit as 

 compared to the 2 and 3-year old pits in Figures 55 and 56. 



190 



