Het Vlock Casteel (Môrester) lies at the foot of Kasteelberg (" Castle Mountain "), in the fertile Riebeek Valley . The land was first cultivated by Adriaan Johannes Vlok in 1958. He was a true visionary and saw the full potential of the Valley, but at that stage water was scarce and very few permanent crops were being planted.

The Riebeek Valley experiences a Mediterranean type climate (+-40 ºC), with long, hot summers and short cold winters (seldom under 10ºC and no frost). The winter rains are however not substantial enough to sustain agricultural practices throughout the dry season.

To overcome some of these obstacles, Attie Vlok and Baila Bruwer of Dagbeek Farm, envisioned a water scheme, and in 1972 this dream was realised when the Berg River Water Scheme was born. This scheme provides water to at least 13 farms in the Valley, including Riebeek Cellars.

" Water brought prosperity to the Riebeek Valley " - Kobus Bruwer (Son of Baila Bruwer, present owner of Dagbreek Farm)

In the early 1980s the farm produced only table and wine grapes, but before the end of the decade, the farm had diversified and in addition to the vineyards, was producing peaches, nectarines and citrus fruit. Since the 1990s further crop varieties were added, including plums and olive groves and most recently, pomegranates.

Up to 95% of the fruit grown on the farm is for the export market through Capespan, with local sales being shipped under the Kasteelberg label. All of the olives grown on the farm are handled and processed locally.