Complex sentence: The feeder canal was used to supply water to the main canal from the Delaware River, this towpath eventually had rail laid along its length which provides a firm foundation common to rail trails; the surface is crushed stone.
Split into simpler sentences: The feeder canal was used to supply water to the main canal from the Delaware River. This towpath eventually had rail laid along its length which provides a firm foundation common to rail trails; the surface is crushed stone.