Southern Indiana Railroad (SIND) S-2m No. 103 leaves Watson and enters a “tree tunnel” on the return trip to Sellersburg, Indiana, on August 10, 2012. SIND is a small railroad servicing a cement plant that operates from Sellersburg to the interchange with CSX at Watson, Indiana. They operate with two rebuilt Alco switches, now fitted with 600-horsepower Cummins diesel engines, on former interuban right-of-way, which really shows in this view.