Split Rock is a hamlet in the Town of Onondaga in Onondaga County, New York. Today more a historic place than a community, Split Rock is a site of great interest to industrial archeology. The Solvay Process Company developed quarry operations here, delivering limestone used for the Solvay process by a remarkable elevated conveyor to the industrial plant at Solvay, New York. During World War I, Split Rock was the site of a munitions factory which exploded with tragic loss of life on 2 July, 1918. Following the war the site ceased production of war materials, but was used for a time as a State Department of Transportation maintenance and parking facility supporting DOT operations in the Central New York area. That role ceased in the mid 1980s. Today the area has largely reverted to natural growth, but retains intriguing ruins, including man-made tunnels as well as natural limestone caves.