Complex sentence: Big Thunder Mountain Railroad closes at Disneyland for a refurbishment, to include an entire replacement of new track (similar to the Space Mountain refurbishment), new trains, new scenery, and new effects.
Split into simpler sentences: Big Thunder Mountain Railroad closes at Disneyland for a huge refurbishment. The new ride will include a entire replacement of new track (similar to the Space Mountain refurbishment) new trains, new scenery, and new effects.