Loading view. There are no upcoming events. There are no upcoming events. Opstal Estate Events Venues Opstal Estate Slanghoek Valley Rawsonville, Western Cape 6845 South Africa Get Directions 023 344 3001 http://www.opstal.co.za/ Events at this venue Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file Trade Diary Add an Event