Simplify the following text for a Grade 11 native English-speaking person.
Original: The site contains a number of special features and shows different landforms , including the natural arch at Durdle Door , the cove and limestone folding at Lulworth Cove and an island , the Isle of Portland .
Simplified: The site shows excellent examples of landforms , including the natural arch at Durdle Door , the cove and limestone folding at Lulworth Cove and an island , the Isle of Portland .