Matches in DBpedia 2015-10 for { ?s ?p "Castle Rock is a volcanic plug in the middle of Edinburgh upon which Edinburgh Castle sits. The rock is estimated to have risen some 350 million years ago during the lower Carboniferous period. It is the remains of a volcanic pipe which cut through the surrounding sedimentary rock before cooling to form very hard dolerite, a type of basalt."@en }
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- Castle_Rock_(Edinburgh) comment "Castle Rock is a volcanic plug in the middle of Edinburgh upon which Edinburgh Castle sits. The rock is estimated to have risen some 350 million years ago during the lower Carboniferous period. It is the remains of a volcanic pipe which cut through the surrounding sedimentary rock before cooling to form very hard dolerite, a type of basalt.".