Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Struve Geodetic Arc' has mentioned 'Lead' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| These marks take different forms: small holes drilled in rock surfaces, and sometimes filled with lead; cross-shaped engraved marks on rock surfaces; solid stone or brick with a marker inset; rock structures (cairns) with a central stone or brick marked by a drilled hole; individual bricks; as well as especially constructed 'monuments' to commemorate the point and the arc. | UNESCO |