Plate 36. 



Fig. A. Hill-rimmed basin above the gorge of Yumuri River, Matanzas, Cuba. 



B. Upper end of Yumuri gorge looking toward the basin. 



C. View upstream from the lower end of Yumuri gorge. If this basin were 



depressed between 50 and 100 feet a pouch-shaped harbor with a 

 narrow entrance would result. 



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