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Ph van Gulpen Kasteelrune Valkenburg. en View of the castle ruin in Valkenburg Limburg the Netherlands Drawing by Philippus van Gulpen Timmers ed In het voetspoor van Ph van Gulpen DSM Calendar Heerlen Philippus van Gulpen Custom marker PDold Uploaded with Drawings of castles in Limburg by Philippus van Gulpen Valkenburg Castle