Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Mount Etna' has mentioned 'Lava tube' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| Engineers then decided to use explosives near the source of the lava flow, to disrupt a very efficient lava tube system through which the lava travelled for up to 7xc2xa0km (4xc2xa0mi) without losing significant heat or fluidity. | WIKI |
| The main explosion on 23 May 1992 destroyed the tube and forced the lava into a new artificial channel, far from Zafferana, and it would have taken months to re-establish a long lava tube. | WIKI |