Complex sentence: The "Russian Mountain" was billed in 1964 as the largest roller coaster in the world-110 ft high and 5,000 ft long-and as of 2008 it was the oldest roller coaster in Mexico, and one of the few NAD rides still in operation.
Split into simpler sentences: The "Russian Mountain"/ "La Montaña Rusa" was billed in 1964 as the largest roller coaster in the world-110 ft high and 5,000 ft long. As of 2008 it was the oldest roller coaster in Mexico, and one of the only NAD rides still in operation.