Simplify the following text for a Grade 8 native English-speaking person.
Original: There is no evidence that the Macassans spent time on the coast of Kakadu but there is evidence of some contact between Macassan culture and Aboriginal people of the Kakadu area .
Simplified: There is no evidence that the Macassans spent time on the coast of Kakadu . There is evidence of some contact between Macassan culture and Aboriginal people of the Kakadu area .