Occurrence of Attributes in Original Text

The text related to the cultural heritage 'The English Lake District' has mentioned 'Limestone' in the following places:
Occurrence Sentence Text Source
There are no high summits in this area which is mainly low hills, knolls and limestone cuestas such as Gummer's How and Whitbarrow.
Around the edges of these Ordovician and Silurian rocks on the northern, eastern and southern fringes of the area is a semi-continuous outcrop of Carboniferous Limestone seen most spectacularly at places like Whitbarrow Scar and Scout Scar.