Sierra Negra volcano | Black lava in the crater. | Isabela (Albermarle) (
Galapagos
)
Filename: GP0908EP169_isabela-sierra-negra.jpg (Edward Paine)
![GP0908EP169_isabela-sierra-negra.jpg [© Last Frontiers Ltd]](/imagestore/galapagos/GP0908EP169_isabela-sierra-negra.jpg "Black lava in the crater.")