Complex sentence: The "Canning River Wetlands", which takes in Mount Henry Peninsula, is on the Register of the National Estate, (Australia's national inventory of natural and cultural heritage places which are worth keeping for the future).
Split into simpler sentences: The "Canning River Wetlands", which takes in Mount Henry Peninsula, is on the Register of the National Estate,. Estate (Australia's national inventory of natural and cultural heritage places which are worth keeping for the future).