Around 70 , 000 years ago its last eruption filled in that gaping hole with flows of lava 大约7万年前，最后一次火山爆发，熔岩流填满了许多洞穴。
Gordillo said there were no groups of the giant tortoises in the path of the lava flow 谢拉内格拉火山于10月22日傍晚开始喷发，产生了3条熔岩流。
The most destructive was in 1841 , when lava flows buried a town , killing 1 , 200 people 最惨烈的则是1841年，当时诸多熔岩流埋葬了一个乡镇，杀死1200人。
Lava flow on the south flank of south sister . photograph by steve mattox , august 1987 译文：三姐妹山南峰南坡上的熔岩流。史蒂夫?马托克斯在1987年8月拍摄。
Besides lava flows , etna produces an almost constant , rhythmic discharge of steam , ash and molten rock 除了熔岩流，埃特纳也几乎稳定、有节奏地喷发蒸汽、火山灰和熔融的岩石。
Volcanic eruptions have created a constantly changing landscape , and the lava flows reveal surprising geological formations 火山猛烈的喷发不断地改变周围的景观，熔岩流揭示了奇妙的地质构造过程。
This reversal process can be seen in the pale magnetic record , locked into rocks of the ocean floor and in some lava flows 这个倒转过程能在古地磁记录中看到，这些记录被锁定在海底的岩石里和一些熔岩流中。
The bulk of the volcano is basaltic , but the slopes are dotted with cones and lava flows consisting of glassy , silica - rich lavas called dacites 此火山的主体是玄武岩，但是山坡却点缀著由石英安山岩（一种玻璃质、富含矽的熔岩）形成的熔岩锥和熔岩流。
A new fissure in the volcano opened earlier as emergency crews , blackened and sweating , battled to reinforce the mounds and divert lava away from rifugio sapienza . mount etna is europe ' s most active volcano and stands at 10 , 860ft 火山新近多了一个裂缝，救援人员已经是浑身漆黑，大汗淋漓，但他们仍然在为加固土堤，让熔岩流改道，从而避免熔岩流流经rifugio sapienza而奋战。
