Simplify the following text for a Grade 7 native English-speaking person.
Original: South Africa has also developed into a major wine producer , with some of the best vineyards lying in valleys around Stellenbosch , Franschoek , Paarl and Barrydale .
Simplified: South Africa has also developed into a big wine maker . It has some of the best vineyards lying in valleys around Stellenbosch , Franschoek , Paarl and Barrydale .