Complex sentence: The actual ledge from which Moriarty and Holmes supposedly fell is on the other side of the falls; it is accessible by climbing the path to the top of the falls, crossing the bridge and following the trail down the hill.
Split into simpler sentences: The actual ledge from which Moriarty and Holmes supposedly fell is on the other side of the falls. It is accessible by climbing the path to the top of the falls, crossing the bridge, and following the trail down the hill.