Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Surtsey' has mentioned 'Ridge' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| On 28 December 1963, submarine activity to the northeast of Surtsey began, causing the formation of a ridge 100xc2xa0m (330xc2xa0ft) high on the sea floor. | WIKI |