Simplify the following text for a Grade 12 native English-speaking person.
Original: The progressive declaration was due to the debate over whether mining should be allowed at Guratba ( Coronation Hill ) which is located in the middle of the area referred to as Sickness Country .
Simplified: The need to create the park in stages was due to the debate over whether mining should be allowed at Guratba ( Coronation Hill ) which is located in the middle of the area referred to as Sickness Country .