3°4 



PHYSICAL GEOLOGY 



Fig. 296. — A, Krakatao as seen from the north after the eruption of 1883. 

 B, an outline of the crater of Krakatao. The dotted lines show the contour of the 

 island before the eruption, the continuous lines as it is now. 



(2) Krakatao. — The most stupendous volcanic explosion of mod- 

 ern times occurred in the East Indies when the island of Krakatao, 

 lying between Java and Sumatra, suddenly became eruptive in 1863. 



F ig. 297. — Map of a portion of Alaska showing the thickness in inches of the deposit 

 of ash from an eruption of the volcano Katmai in 1912. 



