Credit: SWNS Nitish Tiwaribr br This fearless 'hiker' made the terrifying climb up a 2,300ft-high carved stone staircase -- with no handrail.br br Nitish Tiwari, 26, took three-and-half-hours to climb the vertigo-inducing - and famously slippery - stone staircase, which stands at an 80-degree angle. br br The trek is considered one of the most difficult in the Western Ghats, a chain of mountains running parallel to India's western coast.