Complex sentence: The castle structures on the mound are long gone, but the land still clearly bears the marks of a ditched motte which has a diameter of 34m and raises to a height of 6.0m and an oval embanked and ditched bailey.
Split into simpler sentences: The castle structures on the mound are long gone, but the land still clearly bears the marks of a ditched motte. The motte has a diameter of 34m and raises to a height of 6.0m, with an oval embanked and ditched bailey.