In ancient times, Wied Dalam used to form part of a river which ended in Birżebbuġa Harbour. Its name derives from Għar Dalam cave which is found in the area. In this valley sits a Roman country-house known as ‘Ta’ Kaċċatura’ which dates to the second century before Christ, although it could even date to the Punic period. Like other Roman villas, this country-house was used for the production of olive oil. It also includes a large cistern whose ceiling rests on large stone columns.