This was a real engineering feat as the height difference between the two ends is only 12.5 inches [32 cm], despite its length of 1,749 feet [533 m].
Tunelis bija īsts inženiertehnisks sasniegums, jo augstuma starpība starp abiem tā galiem ir tikai 32 centimetri, bet tā garums — 533 metri.