Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Stone Circles of Senegambia' has mentioned 'Laterite' in the following places:
Occurrence Sentence Text Source
Together the stone circles of laterite pillars and their associated burial mounds present a vast sacred landscape created over more than 1,500 years.
The monuments consist of what were originally upright blocks or pillars (some have collapsed), made of mostly laterite with smooth surfaces.
The stones were extracted from laterite quarries using iron tools, although few of these quarries have been identified as directly linked to particular sites.
The builders of the monuments here possessed great knowledge of their local geology in order to find the sources of laterite stones.
The pit was backfilled and capped with a mound overlaid with scattered laterite blocks.
Within this layer, a laterite slab was also discovered, which may have been used as a sacrificial table.
[24] The majority of findings from this zone were small bone fragments buried with laterite blocks, located primarily in the inner circle of the monument.
The stones forming the circles were extracted from nearby laterite quarries using iron tools and skilfully shaped into almost identical pillars, either cylindrical or polygonal, on average around 2 m in height and weighing up to 7 tons.