"Hillocks are made to create a natural mountains scenery" are the characteristic feature of (informal style)

“Hillocks are made to create a natural mountains scenery” are the characteristic feature of (informal style) Japanese garden.
Japanese gardens are serene and simple places of calm, providing a peaceful retreat for reflection and meditation. They avoid the extravagance of many Western garden designs, and consist mostly of evergreens, rocks, pebbles, sand, ponds and waterfalls.