South East crater
In May 1997, activity at South-East crater
stays against South part of crater, with degassing or explosive activity.
Coming South-East cone (10 years later almost Etna's summit...) can been seen just up crater's (cf. image down).
Explosive and effusive activity
Lava's bubble exploding
Some seconds later.
(Cones from 2002, Laghetto, Silvestri)
Caves of Etna
(Gelo, Lamponi, Cassone, Tre Livelli, Monte Nunziata)