Complex sentence: Most of the Line's remains cannot be found; however, there are still some defensive structures left at Shing Mun Redoubt, and bunkers at Lion Rock, Tate's Cairn and Port Shelter.
Split into simpler sentences: Most of the Line's remains cannot be found. There are still some defensive structures left at Shing Mun Redoubt, and bunkers at Lion Rock, Tate's Cairn, and Port Shelter.