EntityQ8522896· pop 13· linked from 41 articlesCastle RockSign in to savevolcanic rock in the middle of Edinburgh, United KingdomConnectionsEdinburghEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityScottish GaelicEntitygeologic time scaleEntitybasaltEntitysedimentary rockEntityCarboniferousEntityglaciologyEntitysummitEntityaquiferEntityEdinburgh CastleEntitytopographic prominenceEntitytopographic mapEntitydiabaseEntityvolcanic plugEntityArthur's SeatEntityfirst ascentEntityCalton HillEntityvolcanic pipeEntityCategoriesCarboniferous volcanoesHills of EdinburghVolcanic plugs of Scotland