Simplify the following text for a Grade 8 native English-speaking person.
Original: To the north of Johannesburg , the altitude drops beyond the escarpment of the Highveld , and turns into the lower lying Bushveld , an area of mixed dry forest and an abundance of wildlife .
Simplified: To the north of Johannesburg , the altitude drops beyond the escarpment of the Highveld . It then turns into the lower lying Bushveld , an area of mixed dry forest and a lot of wildlife .