Etna's smoke rings in July 2000


Smoke ring leaving the Bocca Nuova crater.	The interior and E vent of BN that produces the smoke rings.	3 pits form the E vent of BN. Steam is coming out from the 4-5 m wide pit in the center, where the rings form.

SE crater and two smoke rings from Bocca Nuova sailing over it.	Smoke ring and SE crater. The Torre del Filosofo mountain hut can be seen in front of the SEC.	Two smoke rings in the sky. Bocca Nuova (left) and NEC (right).

Perfectly circular steam rings ("smoke rings") in the blue sky. Diameter estimated 100-200m. Some of them display complex wave patterns.