8 



ETNA. 



[Ch. XXVI. 



Description of Plate VI. — The second view (PL VI.) 



re- 



presents the same valley as seen from above, or looking' 

 directly down the Yal del Bove, from the summit of the 

 principal crater formed in 1819. "^ 



The circular form of the Yal del Bove is well shown in this 

 view (PL VI.). To the right and left are the lofty precipices 

 which form the southern and northern sides of the great 

 valley, and which are intersected by dikes projecting in the 

 manner afterwards to be described. In the distance appears 

 the ' fertile region ' of Etna, extending like a great plain 



alonp' the sea-coast. 



The spots particularly referred to in the plate are the 



following : 



rt. Cape Spartivento, in Italy, of which the 

 outline is ::een in the distance. 



6. The promontory of Taormino, on the 

 Sicilian coast, 



4 



c*. The river Alcantra. 



d. The small village of Riposte. 



e, Yalley of Calanna. 



/. The town of Aci Reale. 

 g. Cyclopean islands, or ' Faraglioni,' in the 

 Bay of Trezza. 



A. The great harbour of Syracuse. 



^. The city of Catania, near which is marked 

 the course of the lava which flowed from the 

 Monti Rossi in 1G69, and destroyed part of the 

 city. 



k. The Lake of Lentini. 



I. To the left of the view is the crater of 

 ISU, which is also shown at Xo. 7, in Plate III. 



m. Rock of Musara, also seen at No. 9, in 

 Plate III. 



The 



• 



dimensio 



^ 



am 



nearly vertical precipices, the loftiest being at the upper or 

 eastern end, where, as before stated, they are between 3,000 

 and 4,000 feet high, and the others on the north and soutli 

 side diminishing gradually from that height to 500 feet as 

 they extend eastward. The feature which first strikes the 

 geologist as distinguishing the boundary cliff's of this valley, 

 is the prodigious multitude of vertical dikes which are seen 



The circular 

 the occurrence of so many 



in all directions traversing the volcanic beds, 

 form of the p-reat chn,sm. 



amountinp" 



mind 



Vesuvius the phenomena of the Atrio del Cavallo, although 



* This view is taken from a sketch V. ; but I conceive that it would appear 



made by Mr. James Bridges, corrected in the face of the great precipice, near 



after comparison with several sketches of which the smoke issuing from the cone 



my own. I am miable to point out the No. 7 is made to terminate. There are 



precise spot which this crater would many ledges of rock on the face of that 



occupy m the view represented in Plate precipice where eruptions have occurred. 



I 

 I 





I 



