Complex sentence: In June of 1899, the Pavilion was formally opened by John Arthur Eddy and tourists, who rode the train as far as Toboggan and finished the trip by stagecoach.
Split into simpler sentences: In June of 1899, The Pavilion was formally opened by John Arthur Eddy. The first vistors rode the train as far as Toboggan and finished the trip by stagecoach.