It’s the world’s first mountain-climbing cog railway (rack-and-pinion railway). It uses a Marsh rack system to climb Mount Washington in New Hampshire, USA.
The railway ascends the mountain beginning at an elevation of approximately 2,700 feet (820 m) above sea level and ending at the summit of Mt. Washington at an elevation of 6,288 feet (1,917 m).
It is the second steepest rack railway in the world with an average grade of more than 25 per cent and a maximum grade of 37.41 per cent.
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